Mariana ARGHIR


32-87 STUDIUL ABSORBŢIEI SONORE DE CĂTRE PLANTELE DE INTERIOR

STUDY OF SOUND ABSORPTION BY INTERIOR PLANTS
The paper contains a proof study on the sound absorbtion by ornamental plants (indoor). They have considered a lot of plants: Buxus Sempervirens, Thuja Occidentalis, Ficus Benjamina, Spathiphyllum and Philodendron Scadens Spatiphyllum, for which we have been made on the sound absorption measurement and came to some remarkable conclusions concerning absorbed soundtrack by these plants. In this paper it proves why some plants have more pronounced sound absorption than other plants. Demonstration is made by microscopic study of the leaf planting.
Keywords: pollution sound, absorption, houseplants
Cuvinte cheie: poluare sonorǎ, absorbție, plante de interior

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32-70 http://stiintasiinginerie.ro/wp-content/uploads/2017/05/32-70.-SOLICITAREA-LA-VIBRAŢII-A-COLOANEI-VERTEBRALE-ÎN-CONDIŢII-DE-TRANSPORT-Acxel-Emil-FARCAȘ-Mariana-ARGHIR-1.pdf

OSCILLATING SPINE IN CONDITIONS OF TRANSPORT
The paper contains analysis of vibration measurements on a human subject located in a vehicle. The measurements were made by categories of road: asphalt, gravel and soil. Accelerometer positions were under the seat to the lumbar spine. This paper aims to establish the transmission of vibrations occurring in a vehicle and acting on the occupants.

Keywords: vibration effects, instrumentation, medium, transducer, sat
Cuvinte cheie: vibraţii, efecte, aparate de măsură, mediu, traductor, şezut

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31-28 DESPRE IMPORTANŢA TERAPIILOR COMPLEMENTARE

ABOUT THE IMPORTANCE OF THE

COMPLEMENTARY THERAPIES

 

The main aim of this article is to achieve a synthesis of the situation caused by musculoscheletal pain disorders, with a focus on the low back pain (Lower Back Pain), cost, implications, and to what extent complementary approaches can be an aid în order to meet the empowerment of individuals, their families, society and în effect of reducing the number of deceased persons due to the negative effects produced by drugs. This synthesis is based on the data published în the U.S., the data found for Romania and Europe are inadequate and irrelevant în order to draw a conclusion. However, there are some data presented and compared the U.S. and European countries including Romania and not only, as the level of investment în the sector of medical care services for the population.

 

Keywords: health, complementary therapies, lifestyle, obesity, vibration

Cuvinte cheie: sănatate, terapii complementare, stil de viață, obezitate, vibrații

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28-82 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL

RESEARCH AND DEVELOPMENTS ON NOISE
POLLUATION IN INDUSTRIAL ENVIRONMENTS
The document shows the importance of study and research of noise pollution phenomenon, which is an internationally and nationally current issue, because it affects people and causes so-called occupational diseases. But we have to consider that the main source of noise pollution is industrial environment.
Keywords: sound pollution, noise impacts, industrial environment
Cuvinte cheie: poluare sonorǎ, impactul zgomotului, mediul industrial

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28-81 STUDII ŞI CERCETĂRI ASUPRA REDUCERII POLUĂRII SONORE DE CĂTRE PLANTE LA LOCUL DE MUNCĂ

STUDIES AND RESEARCHES ON NOISE REDUCTION
BY PLANTS AT WORKPLACE
This paper contains studies about how plants reduce noise indoors and which are the involved factors in this process. Also is giving information about the variation of acoustic absorption coefficient depending on plants species.
Keywords: pollution sonorǎ, absorption plants – acoustic absorbers
Cuvinte cheie: poluare sonorǎ, absorbție, plante – absorbanţi acustici

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28-80 STABILIREA POLUĂRII SONORE ÎN MUNICIPIUL ORADEA PRIN TEHNICA FUZZY

ESTABLISHING OF NOISE POLLUTION IN THE ORADEA MUNICIPALITY THROUGH FUZZY TECHNIQUE
This paper contains an application for the noise pollution study based on the fuzzy technique, applied to the Oradea municiplaity. This method was not at all used until this moment for the noise study from the another researchers, but this is a very good method because it is a non invasive method end can be applied with succeful for the noise pollution study. This aspect will be demonstrate in this paper.
Keywords: pollution sonorǎ, fuzzy technique, method we invasive
Cuvinte cheie: poluare sonorǎ, tehnica fuzzy, metoda neinvazivǎ

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27-89 EFECTELE VIBRAŢIILOR ASUPRA ORGANISMULUI UMAN

VIBRATION EFFECTS ON HUMAN BODY
This paper contains a study on the vibration effects the human body. Vibrations may cause more or less serious health effects in humans. It shows to entire human body or exposure to hand-arm system and over them the vibrations caused health disorders.
Keywords: vibration effects syndromes, environment
Cuvinte cheie: vibraţii, efecte, sindroame, mediu

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27-88 CONCEPEREA UNEI BAZE DE DATE ALE ZGOMOTULUI EMIS DE UTILAJE ÎN CONSTRUCȚII CIVILE

NOISE MEASUREMENTS ISSUED ÎN CIVILE CONSTRUCTION SITES DATA BASE
This paper contains considerations about the noise issued în construction sites, measuring the effective noise from the devices and equipment used în construction sites. All the data are organize into a data base that, it is, and should be useful în measuring the level of noise that the workers has to deal with în the construction sites. The data base should help the contractors, architects and workers to respect more effectively the noise risk protection rules
Keywords: noise, database, noise limits, database CPT Torino
Cuvinte cheie: zgomot, baza de date, limite ale nivelului de zgomot, banca de date C.P.T. Torino

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27-87 ANALIZA ZGOMOTELOR ŞI VIBRAŢIILOR PRODUSE DE MIJLOACELE DE TRANSPORT

ANALYSIS NOISES AND VIBRATIONS PRODUCED BY TRANSPORT
This article presents the importance analysis of the noises and the vibrations produced by the buses or trucks and the methods that can reduce them.
Keywords: source of noise, traffic, frequency
Cuvinte cheie: sursa de zgomot, trafic rutier, frecvență

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27-86 MENTENANŢA PREDICTIVĂ ÎN STUDIUL MAŞINILOR DINAMICE ROTATIVE

PREDICTIVE MAINTENANCE IN THE STUDY
OF ROTATIVE DINAMICS MASCHINES
The paper contains theoretical substantiation for machines and equipment troubleshooting, machine bodies in rotational motion. It analyses the dynamic rotary machines, fitted with elastic rotor in rigid bearings without damping, as well as the rotor symmetrically rotational movement with the elastic bearings without depreciation.
Keywords : balancing , maintenance, dynamic rotating machines
Cuvinte cheie: echilibrare, mentenanţă, maşini dinamice rotative

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27-85 STUDIUL IMPEDANŢEI MECANICE A MODELULUI CORESPUNZĂTOR SISTEMULUI UMAN MÂNĂ-BRAŢ

STUDY OF MECHANICAL IMPEDANCE OF THE MODEL CORRESPONDING FOR HAND-ARM HUMAN SYSTEM
The present paper will be a presentation of one possible method of driving mechanical impedance determination. Exposure to harmful vibrations can lead to damages of the structures and health problems or disorders that can appear at the human body. The knowledge of the structures and human body mechanical impedance is essential for realizing appropriate administrative, technical and medical prevention measures.
Keywords: mechanical impedance, vibration, human hand-arm system
Cuvinte cheie: impedanţă mecanică, vibraţii, sistemul uman mână-braţ

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26-50 CONTRIBUŢII PRIVIND REALIZAREA UNUI DISPOZITIV DE DETERMINARE A COEFICIENTULUI FONOABSORBANT

CONTRIBUTIONS ON THE DEVELOPMENT OF A DEVICE FOR MEASURING THE SOUND-ABSORBING COEFICIENT
This paper aims to describe fiction and the components of a device for the determination of sound-absorbing coefficient published [1] în the previous edition and essential elements în implementing the architecture processed and acoustic signals analysis undertaken
Keywords: impedance tube, phono-absorbing coefficient, signal analizer

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26-40 CONTRIBUŢII PRIN MĂSURĂTORI LA STUDIUL VIBRAŢIILOR TRANSMISE ORGANISMULUI UMAN

CONTRIBUTIONS BY VIBRATION MEASUREMENTS TO STUDY SUBMITTED HUMAN BODY

This paper contains a study on the effects of vibration and permissible limits human. Complexity factors acting on the body and need precise measurements of vibrations imply reliability and precision. By using devices SVAN 958 and IHVM 100 is successfully creating precision measurements and also being portable allowing easy movement to any area for fast setup.
Keywords: vibration, effects, extent, medium

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26-37 CONSIDERAȚII PRIVIND EFECTELE NON-INVAZIVE ALE ZGOMOTULUI ASUPRA LUCRĂTORILOR DIN CONSTRUCȚII CIVILE

CONSIDERATION REGARDING THE NON INVASIVE EFFECTS OF  NOISE  ON THE CIVILE CONSTRUCTIONS WORKERS

This paper  contains considerations about the noise effects on   the health of workers. There are  definition of the noise and the causes of the noise pollution în our  modern society and describe the  negatives effects  of the  higher noise level that the workers has to deal with în the  construction sites.

Keywords: noise, non invasive effects of noise level limits

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26-36 INVESTIGAREA NON-INVAZIVĂ A ZGOMOTULUI PROFESIONAL ASUPRA LUCRĂTORILOR

NON-INVASIVE INVESTIGATION OF PROFESSIONAL
NOISE OVER THE WORKERS
Ther paper introduces a new investigation method for the noise action
over the worker in the industrial field. This method consists in the ECG
evaluation of the workers that are inside the industrial space during the
professional activity. The paper presents an experimental study of the noise
action on a sample of workers of different ages. They work in an industrial
workers space with 8 different machine tools, 8 hours per day, 5 days per
week. The paper looks to establish the impairment of workers’ occupational
noise. All of them were made in the morning, and at the end of the work each
day. Comparing the results of ECG measurements, pre and post exposure to
sound level above 80 dB, may establish the risk of cardiac disease in different
form of it.
Keywords: pollution, noise, sound pollution, method noninvasive
Cuvinte cheie: poluare sonorǎ, zgomotul profesional, metoda
neinvazivǎ
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26-34 STUDIU TEORETIC ASUPRA APLICABILITĂŢII IMPEDANŢEI MECANICE

THEORETICAL STUDY ON THE APPLICABILITY OF
MECHANICAL IMPEDANCE
The present paper will be a presentation of the informations from
specialized literature and international standards about the importance of
mechanical impedance study for all structures including human body.
Exposure to harmful vibrations can lead to damages of the structures
and health problems or disorders that can appear at the human body.
The knowledge of the structures and human body mechanical
impedance is essential for realizing appropriate administrative, technical and
medical prevention measures.
Keywords: mechanical impedaţă mechanical vibrations, the human
hand-arm system
Cuvinte cheie: impedaţă mecanică, vibraţii mecanice, sistem uman
mână-braţ
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26-25 STUDII ŞI CERCETĂRI PRIVIND POLUAREA SONORĂ ÎN HALELE INDUSTRIALE

STUDIES AND RESEARCH ON NOISE POLLUTION
IN INDUSTRIAL HALLS
This paper contains studies about the noise pollution, especially, în
industrial halls and the effects on the human body. Also, it Is giving us some
methods of reducing the noise pollution.
Keywords: sound pollution, intensity, pollution effects
Cuvinte cheie: poluare sonorǎ, intensitate, efecte
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26-24 BARIERE FONICE PE AUTOSTRĂZI

HIGHWAYS NOISE BARRIERS
This article presents the advantages of the noise barriers on the
highways and the importance of it în the human healthy. Realization of noise
barriers is beneficial for both the inhabitants and the houses in the surroundings
of highways as well as vegetation and fauna. They have a special role and
need a very big important.
Definition. The main attribute of noise barriers is to protect
communities from pollution resulting from the soundtrack continues to climb.
Keywords: noise barrier, the threshold of audibility, design
Cuvinte cheie: barieră fonică, prag de audibilitate, design
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26-21 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL

RESEARCH AND DEVELOPMENTS ON NOISE
POLLUATION IN INDUSTRIAL ENVIRONMENTS
The document shows the importance of studying and researches the
phenomenon of noise pollution which is a current issue both internationally and
nationally, because it affects people and causes so-called occupational
diseases. But we have to consider that the main source of noise pollution is
industrial environment.
Keywords: pollution, noise, impact sound, industrial environment
Cuvinte cheie: poluare sonorǎ, impactul zgomotului, mediul industrial
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19-79 POLUAREA SONORĂ

NOISE POLLUTION
Noise pollution is a danger that threatens population and environment
along with other factors such as: gas emissions in the atmosphere, the
discharge of waste water with dangerous substances content on soil and water,
storage of waste on the ground.
It is found that both sounds, how much and infra-sounds and ultra –
sounds have adverse effects on humans. The most important source of noise in
the larger cities is road traffic generated by the friction of the wheels on the
asphalt and packaging the engines.
To reduce the noise level of the individual measures are taken which
are the personal discipline, and technical measures covered by the obscuration
of the source of noise, protected housing, which is situated the antiphon rooms
noisy plants, screens phonoabsorbant for highways.
Keywords: noise, electromagnetic radiation, mechanical waves, noise,
noise monitoring, environmental noise, noise management
Cuvinte cheie: poluare sonoră, radiaţii electromagnetice, unde
mecanice, zgomot, monitorizarea poluării sonore, zgomotul în mediu,
managementul zgomotului

79 POLUAREA SONORĂ


19-106 ANALIZA COMPORTĂRII FIZIOLOGICE ŞI FUNCŢIONALE SUB ACŢIUNEA VIBRAŢIILOR

STUDY ON PHYSIOLOGICAL AND FUNCTIONAL
CHANGES UNDER THE VIBRATIONS
This paper is designe to provide a better knowledge and increase
awareness about the action of vibrations on the human body, the possible
action in the human functions and them refind in the short time. These
vibrations can produce some changes in the body and ultimately affect health.
Keywords: environment, health, disruptive agent, disability, vibration
Cuvinte cheie: mediu, sănătate, agent perturbator, handicap, vibraţii

106 ANALIZA COMPORTĂRII FIZIOLOGICE ŞI


19-107 AFECŢIUNI ALE SISTEMULUI UMAN MÂNĂ-BRAŢ DATORATE VIBRAŢIILOR MAŞINILOR-UNELTE PORTABILE

DISORDERS OF THE HUMAN HAND-ARM SYSTEM
VIBRATION DUE PORTABLE MACHINE-TOOLS
This paper is designed to be an information to the public about the
importance of portable machine-tool vibration action on the human body and
particularly on the hand-arm system.
The primary objective of the present paper is to show the effect of
whole-body vibration and identify those moderating variables that influence the
degree to which human performance is affected, and also to highlight a certain
amount of diseases caused by prolonged exposure to vibrations of portable
machine tools.
Keywords: mechanical vibration, portable machine tools, hand-arm
Cuvinte cheie: vibraţii mecanice, maşini-unelte portabile, mână-braţ

107 AFECŢIUNI ALE SISTEMULUI UMAN MÂNĂ-BRAŢ


19-108 EFECTELE PSIHOACUSTICE ALE ZGOMOTULUI EMIS DE MAŞINILE-UNELTE

PSYCHOACOUSTIC EFFECTS OF STRUCTURAL
NOISE ISSUED FOR MACHINE-TOOLS
This paper presents a summary of literature information regarding the
risk for employees exposed to structural noise at work environment with
increasing neuropsychological and psyhosenzorial stress and at work
environment strating by psyhoacustics effects.
Keywords: mechanical vibration, Structural noise, psychoacoustic
effects
Cuvinte cheie: vibraţii mecanice, zgomot structural, efecte
psihoacustice

108 EFECTELE PSIHOACUSTICE ALE ZGOMOTULUI


19-110 MODELAREA DINAMICĂ A MANIPULATORULUI TT ÎNTR-O LINIE AUTOMATĂ DE MONTAJ

DYNAMICS MODELLING OF A TT MANIPULATOR
FOR AN ASSAMBLAGE LINE OF AUTOMATION
This paper has a destination to express the dynamics ecuations of a
manipulator used into an line built for an assemblage line of automation. This
line is a part of experimental stand made for the images data in a mechanical
structure.
Keywords: structural mechanics, dynamic equations, automatic
assembly line
Cuvinte cheie: structură mecanică, ecuaţii dinamice, linie automată de
montaj

110 MODELAREA DINAMICĂ A MANIPULATORULUI TT


20-70 MĂSURĂTORI ALE VIBRAŢIILOR PRODUSE DE UN CIOCAN DE FORJĂ Simona Camelia ŞARAMET, Mariana ARGHIR

MEASUREMENTS OF VIBRATIONS PRODUCED
BY A FORGE HAMMER
In this study is presented some measurements and computer data
acquisition system. It is presented the steps of experiments and measurements
on the human subject in the technological flow during forging hammer.
The results of measurements were presented processing, graphics
and conclusions.
Keywords: vibration, forging hammers, measurements
Cuvinte cheie: vibraţii, ciocane de forjat, măsurători

70 MĂSURĂTORI ALE VIBRAŢIILOR PRODUSE


20-87 STUDIUL PREDICTIV AL ANGRENAJELOR DIN MAȘINI-UNELTE

PREDICTIVE STUDY OF MACHINE-TOOLS GEARS
This paper is designed to offer a better understanding of the need for
predictive maintenance for safe operation of machine-tools and minimizing idle
time and reducing repair costs. The ultimate goal of predictive maintenance is
the implementation of maintenance works „when appropriate” before the
equipment is damaged during the operation.
Keywords: mechanical vibration, gears, machine tools, predictive
Cuvinte cheie: vibraţii mecanice, angrenaje, masini-unelte, predicţie

87 STUDIUL PREDICTIV AL ANGRENAJELOR


23-66 VIBRAŢIILE MECANICE CA O MODALITATE DE TRATAMENT

VIBRATION AS A TREATMENT MODALITY
Whilst exposure to vibration is traditionally regarded as perilous,
recent research has focused on potential benefits. Acute physiological
responses to isolated tendon and muscle vibration and to whole body vibration
exercise are reviewed, as well as the training effects upon the musculature,
bone mineral density and posture. Possible applications in sports and medicine
are discussed. Vibration training also seems to improve balance in subpopulations
prone to fall, such as frail elderly people.
Cuvinte cheie: musculare vibraţii, modalitatea de tratament
Keywords: muscle vibration, treatment modality

23-66 VIBRAŢIILE MECANICE CA O MODALITATE


23-67 STUDIU TEORETIC ASUPRA APLICABILITĂȚII IMPEDANȚEI MECANICE

THEORETICAL STUDY ON THE APPLICABILITY OF
MECHANICAL IMPEDANCE
The present paper will be a presentation of the informations from
specialized literature and international standards about the importance of
mechanical impedance study for all structures including human body.
Exposure to harmful vibrations can lead to damages of the structures
and health problems or disorders that can appear at the human body.
The knowledge of the structures and human body mechanical
impedance is essential for realizing appropriate administrative, technical and
medical prevention measures.
Cuvinte cheie: impedanță mecanică, răspuns dinamic, vibrații
mecanice
Keywords: mechanical impedance, dynamic response, mechanical
vibrations

23-67 STUDIU TEORETIC ASUPRA APLICABILITĂȚII IMPEDANȚEI MECANICE


23-68 STUDIUL EXPERIMENTAL AL ACŢIUNII VIBRAŢIILOR MAŞINILOR-UNELTE PORTABILE ASUPRA SISTEMULUI UMAN MÂNĂ-BRAŢ

EXPERIMENTAL STUDY OF THE VIBRATION ACTION
OF PORTABLE MACHINE TOOL ON
THE HUMAN HAND-ARM SYSTEM
This paper is an experimental study about the importance o vibration
action acting on the human operator. For this study were made a series of
measurements on different parts of the hand-arm system of a human operator.
Were measured the vibrations generated by a hammer drill operating both idle
or full load.
Conclusions reguarding this measurements were then generated and
the results are presented in the paper below.
Cuvinte cheie: vibraţii mecanice, maşini-unelte portabile, mână-braţ
Keywords: mechanical vibration, machine tools, portable, hand-arm

23-68 STUDIUL EXPERIMENTAL AL ACŢIUNII VIBRAŢIILOR MAŞINILOR-UNELTE PORTABILE ASUPRA SISTEMULUI UMAN MÂNĂ-BRAŢ


24-3 MENTENANŢA PREDICTIVĂ A ANGRENAJELOR MAŞINILOR-UNELTE PRIN ANALIZA VIBRAŢIILOR

PREDICTIVE MAINTENANCE OF GEARING MACHINERY
VIBRATION ANALYSIS TOOLS
This paper presents the implementing maintenance management for
organizing and preparing system of spare parts to optimize repair time.
Planning the activities of repair and minimizing „downtime” of the machine can
be made only through detection of possible defects. The machine tools
reliability and safety increase, they give respectively operating costs decreased
lead to a better total cost. By studying the vibration signal produced by a gear in
a machine tool structure and the change of the signal related to the presence of
defects gear can identify various defects. Defects are localized at the contact
between the mechanical parts, which means changing of geometry and
conditions of power transmission, which results in vibrations and shocks, the
measurements for determining the gear failures occur.
Cuvinte cheie: angrenajele mașinilor unelte, zgomot, vibraţii, eroare de
transmisie, mentenanța predictivă
Keywords: spur gear, noise, gear vibration, transmission error,
predictive maintenance

3 MENTENANŢA PREDICTIVĂ A ANGRENAJELOR MAŞINILOR-UNELTE PRIN ANALIZA VIBRAŢIILOR


24-14 STUDII ŞI CERCETǍRI DE MENTENANŢA UTILAJELOR

STUDIES AND RESEARCHERS OF EQUIPEMENT
MAINTENANCE
This paper contains a few knpwledges about the equipment
maintenance. The study proposed refers to two aspects particularly important in
the maintenance study. They relate to: global vision of the management and
maintenance routine maintenance conditional.
Cuvinte cheie: mentenanţa utilajelor, managementul mentenanţei,
mentenanţa condiţională
Keywords: equipment maintenance, maintenance management,
maintenance conditional

14 STUDII ŞI CERCETǍRI


24-21 ÎNTREŢINEREA PREVENTIVĂ A AUTOVEHICULEOR

STUDY AND RESEARCH ON MAINTENANCE
MEANS OF TRANSPORT
The document shows the vehicle maintenance phases, in short, are
moments that need minor or major maintenance, daily care. It seeks to avoid
damage auto vehicles during the race, immobilization, thus avoiding the late of
goods or damage.
Cuvinte cheie: mentenanţă, autovehicule, reparaţii, fiabilitate
Keywords: maintenance, vehicles, repair, reliability

21 ÎNTREŢINEREA PREVENTIVĂ


24-37 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL

RESEARCH AND DEVELOPMENTS ON NOISE POLLUATION
IN INDUSTRIAL ENVIRONMENTS
The document shows the importance of studying and research the
phenomenon of noise pollution which is a current issue both internationally and
nationally, because it affects people and causes so-called occupational
diseases. But we have to consider that the main source of noise pollution is
industrial environment.
Cuvinte cheie: poluare sonorǎ, impactul zgomotului, mediul industrial
Keywords: pollution, noise, impact sound environment design

37 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL


24-40 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN TRANSPORTURI

RESEARCH AND DEVELOPMENTS ON NOISE
POLLUATION IN THE TRANSPORTS
The document shows the importance of reducing noise pollution from
transport and to identify the factors underlying pollution. There are applied to
Cluj-Napoca municipality because it is one of the busiest cities from Romania
Cuvinte cheie: zgomot, frecvenţă, intensitate sonoră, poluare sonoră

40 STUDII ŞI CERCETĂRI PRIVIND POLUAREA


24-41 DETERMINAREA EXPERIMENTALĂ A NIVELULUI ZGOMOTULUI PROFESIONAL, CU IMPLICAŢII ASUPRA SĂNĂTĂŢII OPERATORULUI UMAN

EXPERIMENTAL DETERMINATION OF PROFESSIONAL
NOISE, WITH WORKERS HEALTH IMPLICATIONS
This paper presents measurement results of noise level emitted by a
lathe and effects of noise on health worker. It was noted that in some
circumstances the maximum allowable is exceeded which requires the use of
means of protection.
Cuvinte cheie: zgomot profesional, maşini-unelte, afecţiuni auditive
Keywords: noise, machine tools, auditory disorders

41 DETERMINAREA EXPERIMENTALĂ A NIVELULUI ZGOMOTULUI PROFESIONAL, CU IMPLICAŢII


24-42 TEHNICA FUZZY – MIJLOC DE EVALUARE A POLUĂRII SONORE ÎN MUNICIPIUL BISTRIŢA

FUZZY TECHNIQUE – EVALUATION METHOD OF NOISE
POLLUTION IN THE BISTRIŢA MUNICIPALITY
This paper contains a new method for the noise pollution study based
on the fuzzy technique, applied to the Bistriţa municiplaity. This method was not
used until this moment for the noise study, but this is a very good method
because it is a non invasive method end can be applied with succeful for the
noise pollution study. This aspect will be demonstrate in this paper.
Cuvinte cheie: poluare sonorǎ, tehnica fuzyy, metoda neinvazivǎ
Keywords: pollution sound, fuzyy technique, method noninvasive

42 TEHNICA FUZZY – MIJLOC DE EVALUARE


24-43 DETERMINAREA ATENUĂRII ZGOMOTULUI ÎN CAZUL UTILIZĂRII UNUI PANOU VERTICAL

DETERMINE IF NOISE ATTENUATION USE
A VERTICAL PANEL
This paper presents a taking the case of highway model consists of 4
lanes, avad 3.75 m on each band, two emergency lanes and a 3 m wide range
depasare separation between the meanings of 2.5 m Was defined attenuation
provided by a vertical panel with a height of 2, 2.5, 3 and 3.5 m, mounted on
the edge of highways on the frequency range 62.5 – 500 Hz.
Cuvinte cheie: panou vertical, ecranare acustică
Keywords: vertical panel, acoustic shielding

43 DETERMINAREA ATENUĂRII ZGOMOTULUI


22-30 CONCEPȚIA DISPOZITIVULUI DE DETERMINARE A COEFICIENTULUI FONOABSORBANT AL MATERIALELOR

This paper presents a constructive variant of acoustic impedance tube
used to determine the coefficient of sound absorption materials. This alternative
design brings a contribution in terms of the number of microphones mounted on
the tube impedance control of acoustic vibration generator. The paper contains
and the calibration system of microphones mounted on the device.
Cuvinte cheie: tubul de impedanţă, determinarea erorilor
Keywords: impedance tube, the determination of errors

30 CONCEPȚIA DISPOZITIVULUI DE DETERMINARE


22-29 STUDIUL DEPLASĂRII PRAGULUI AUDITIV CAUZAT DE ZGOMOTUL EMIS DE MAŞINILE-UNELTE

In industrial environments it is necessary to recognize, evaluation and
control of working places and working stations, as well as occupational groups
with exposure to noise. Therefore, this paper describe the noise effects on
hearing quality and an estimation method of noise – induced hearing
impairment. Using this method is made a comparative study of the noise
induced permanent threshold shift depending on the noise exposure level and
duration by various frequencies between 500 – 6000 Hz.
Cuvinte cheie: zgomot industrial, maşini-unelte, afecţiuni auditive
Keywords: industrial noise, machine tools, hearing disorders

29 STUDIUL DEPLASĂRII PRAGULUI AUDITIV CAUZAT


22-28 ACŢIUNEA VIBRAŢIILOR INDUSE DE MAŞINILE UNELTE PORTABILE ASUPRA SISTEMULUI MÂNĂ-BRAŢ

This paper will be a short presentation of the specialized literature and
international standards about the importance of vibration action of portable
machine-tools on human body and particularly on the hand-arm system.
Exposure to harmful vibrations can lead to health problems and
disorders, especially in the upper joints and dorsal region of the human body.
A thorough knowledge of the undesirable effects of vibration on the
human body is essential for realizing appropriate administrative, technical and
medical prevention measures.
Cuvinte cheie: vibraţii mecanice, maşini-unelte portabile, mană-braţ
Keywords: mechanical vibration, machine tools portable, hand-arm

28 ACŢIUNEA VIBRAŢIILOR INDUSE DE


22-27 CONSIDERAŢII TEORETICE PRIVIND MENTENANŢA PREDICTIVĂ A ANGRENAJELOR SUB ACŢIUNEA VIBRAŢIILOR

This paper is a survey of the literature on gear vibration and is
designed to offer a better understanding of the need for predictive maintenance
for safe operation of machine-tools and minimizing idle time and reducing repair
costs. The ultimate goal of predictive maintenance is the implementation of
maintenance works „when appropriate” before the equipment is damaged
during the operation. Main failure in a gear couple of a simple gearbox, are
defects on all teeth and defects localized only on a group of teeth. These
defects can be partitioned defects or localized defects.
Cuvinte cheie: unelte specifice, zgomot, vibraţii de viteze, eroare de
transmisie, de întreţinere predictivă
Keywords: spur gear, noise, gear vibration, transmission error,
predictive maintenance

27 CONSIDERAŢII TEORETICE PRIVIND MENTENANŢA


22-26 ABSORBŢIA SONORĂ A MATERIALELOR DIN AŞCHII DE LEMN CIMENTATE

This paper presents sound absorption measurements for a cemented
wood-fibber material. An acoustical model is presented in order to determine
physical properties like porosity, airflow resistivity and tortuosity. An inverse
acoustical characterization is used by best-fitting the model function to the
experimental data with the least squares method. The inversion method
contains an optimization process and hence it is verified that the optimal
unknown parameters, even though derived from a mathematical optimum for a
given experimental configuration (sample’s thickness, measured frequency
range), are the intrinsic properties of the characterized porous material.
Cuvinte cheie: impedanţa acustică, absorbţie sonoră, model
matematic

Keywords: acoustic impedance, sound absorption mathematical model

26 ABSORBŢIA SONORĂ A MATERIALELOR


22-25 AVANTAJELE ŞI DEZAVANTAJELE UTILIZĂRII VIBRAŢIILOR MECANICE ÎN ANTRENAMENTELE SPORTIVE

This paper is intended to be an analysis of the effects of mechanical
vibration on the human body, used in sports training and more.
It attempts to outline the benefits and possible risks that it has
vibration action in whole body (WBV). These potential benefits and possible
risks are strongly influenced by the type of vibration, frequency, amplitude and
duration of action of the stimulus.
Cuvinte cheie: vibraţii mecanice, efecte, antrenament, organism uman,
tonifiere musculară
Keywords: mechanical vibration effects, training, human body, muscle
toning

25 AVANTAJELE ŞI DEZAVANTAJELE UTILIZĂRII


22-24 STUDII PRIVIND ACȚIUNEA BENEFICĂ A VIBRAŢIILOR MECANICE ASUPRA OSTEOPOROZEI

The vibration method is a non invasive method in osteoporosis
treatment. It also helps muscle recovery and weight loss. In this paper we
analyze some of the current stage and prospects of this method.
Cuvinte cheie: osteoporoza, vibraţii, corpul uman
Keywords: osteoporosis, vibration, human body

24 STUDII PRIVIND ACȚIUNEA BENEFICĂ A VIBRAŢIILOR


22-23 CORELAŢIA CAUZĂ – EFECT ÎN ACŢIUNEA VIBRAŢIILOR ASUPRA ORGANISMULUI UMAN

This paper contains a short study regarding the correlation cause –
effect of the vibrations action on the humans. There are a lot of working staces
in which the vibrations produced by machine-tools act over the human bodies,
and is very important to know what is the effect inside the body of this action.
Cuvinte cheie: mediu de lucru, cauză – efect, vibraţii, handicap
Keywords: environment, cause – effect, vibration, disability

23 CORELAŢIA CAUZĂ – EFECT ÎN ACŢIUNEA