• 제목/요약/키워드: vibration survey

검색결과 205건 처리시간 0.028초

설문조사를 통한 소음.진동규제법의 현황 및 문제점 분석 (An analysis of the status and problems for the noise & vibration control laws by questionnaires)

  • 손정곤;김정태;이지영
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2008년도 춘계학술대회논문집
    • /
    • pp.889-898
    • /
    • 2008
  • In this study, analyze the status and problem of a noise and vibration control laws of it through the questionnaire. The method of survey was made by questionnaires which were the civil worker 138 persons and civil servant 132 persons. Based on this survey, we suggest a improvement of the noise and vibration control laws.

  • PDF

Sports-brassiere의 컵소재에 따른 방진효과에 관한 연구 (A study on the vibration restraint of sports-brassiere)

  • 손부현
    • 대한가정학회지
    • /
    • 제34권3호
    • /
    • pp.123-136
    • /
    • 1996
  • This report deals with the relations between the vibration restraint and the stress-strain properties of the stretch fabrics. For this purpose, a survey was carried out about the preferences in sports-brassiere. Six experimental sports-brassieres of an equal design, but of different materials were tested for vibration using an accelerometer and a motion analyzer while the subject is jogging. 1. The results of the survey on sports-brassiere preferences are as follows; Preferable factors are simple design, shield and close adhesion of sports brassiere. Dissatisfied factors on the sports-brassiere are drooping, vibrating of the breast, itching and wetting. The B-cup-size group perceive the bigger vibration and drooping than A-cup-size. 2. The results of the wearing tests are as follow; This experiment shows the vibration restraint effects on different stretch fabrics, such as hard, medium and soft nature. There was a linear relationship between the vibration restraint and combination of different types of stretch fabrics. Among different brassiere types, the 2-layered brassiere (inner layer of high tension fabric and outer layer of lower stretch fabric) showed the least vibration. In the case of 2-lay brassiere, the wearing comfort rate was highest.

  • PDF

한강상 교량의 소음.진동레벨 조사.연구 (A survey and research of a noise & a vibration level of bridges on the Han river)

  • 서광석;이연수;박영만;이상수;전재식
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2007년도 추계학술대회논문집
    • /
    • pp.278-280
    • /
    • 2007
  • This survey was carried out to provide a sound and a vibration level of bridges on the Han river. A sound and a vibration level of 6 bridges(Ban po, Cheon ho, Olympic, Jam soo, Young dong, Dong ho) were measured. The X-axis vibration level($L_{10}$) was $42{\sim}60$ dB(H), Y-axis vibration level was $41{\sim}52$ dB(H) and Z-axis vibration level was $44{\sim}77$ dB(V). The Z-axis vibration level($L_{10}$) on the midpoint of bridges was 68 dB(V), and on the joint point was 56 dB(V). The sound level was $77{\sim}84$ dB(A). The sound level of Jam soo bridge was higher than any other bridges.

  • PDF

한국전통정원의 소리환경에 대한 연구(1) - 전통별서정원 소쇄원을 중심으로 -

  • 신용규;남기봉;국찬동
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2004년도 춘계학술대회논문집
    • /
    • pp.1022-1027
    • /
    • 2004
  • Soswaewon is one of the most representative traditional garden in Korea which has the highest reach of soundscape with the sounds and landscape components. This study aims to find out and to introduce the characteristics of soundscape in Korean traditional garden and to establish the basic data of soundscape research. Literature survey, of ancient poetry, acoustical survey on the sound itself and questionnaire survey to the visitors were carried out to analyse the relationships between the images perceived by the visitors and the characteristics of soundscape components in Soswaewon.

  • PDF

건설공사장 소음.진동 실태조사에 관한 연구 (Investigation Study on Noise and Vibration Condition in Construction Site)

  • 선효성;박영민;조윤희
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2008년도 춘계학술대회논문집
    • /
    • pp.879-881
    • /
    • 2008
  • The construction noise and vibration is a serious social problem in the downtown. This results in many expenses and delays of construction process because of the satisfactory settlement of popular complaints. In this study, we analyze the dispute mediation cases on the damages of construction noise and vibration and the noise and vibration condition in construction sites by using questionnaire surveys.

  • PDF

Whole-Body Vibration Exposure vis-à-vis Musculoskeletal Health Risk of Dumper Operators Compared to a Control Group in Coal Mines

  • Kumar, Vivekanand;Palei, Sanjay K.;Karmakar, Netai C.;Chaudhary, Dhanjee K.
    • Safety and Health at Work
    • /
    • 제13권1호
    • /
    • pp.73-77
    • /
    • 2022
  • Background: Whole-body vibration (WBV) exposure of coal mine dumper operators poses numerous health hazards. The case-control study was aimed at assessing the relative musculoskeletal health risk of dumper operators' exposure to WBV with reference to the nonexposed group. Methods: Measurements of WBV exposure were taken at the operator-seat interface using a human vibration analyzer for 110 dumper operators in three coal mines. This vibration measurement was supplemented by a questionnaire survey of 110 dumper operators exposed to WBV and an equal number of workers not exposed to WBV. The relative risk of musculoskeletal disorders (MSDs) has been assessed through the case-control study design. Results: ISO guidelines were used to compare the health risk. It was observed that the prevalence of pain in the lower back was 2.52 times more in the case group compared to the control group. The case group of Mine-2 was 2.0 times more prone to vibration hazards as compared to Mine-3. Conclusion: The case group is more vulnerable to MSDs than the control group. The on-site measurement as well as the response of the dumper operators during the questionnaire survey corroborates this finding.