• Journal of KSNVE
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• v.6 no.5
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• pp.625-633
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• 1996

This paper addresses a systematic way of understanding the transfer characteristics of whole-body vibration due to the external excitation. Amirouche's and Tamaoki's models are considered, whose analysis shows a new result that resonant frequencies related to the head vibration are well coincided with those of the body. This point reveals that the improvement of the ride quality of passenger cars can be achieved by isolating only external vibration components transfered to the body. Finally, this paper points out the limitation of previous whole-body vibration models, which gives the motivations of setting up more 'practical and generalized' whole-body vibration models of interest in this study.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.25 no.4
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• pp.266-274
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• 2015

Vibration exposure of domestic high speed trains(KTX and ITX-saemaeulho) to passenger traveling on the Gyung-Bu line was measured to evaluate health effect which is based on ISO 2631-1. The vibration exposure was compared with the frequency weighted root mean square(r.m.s.) and vibration dose value(VDV) of the two trains’ vibration. It is concluded that vibration exposure of the two train during round trip of Busan-Seoul in single day is evaluated to be safe for the passenger’s health according to the health guidance caution defined on ISO 2631-1. Futhermore KTX’s vibration exposure is found to be significantly lower than ITX-saemaeulho thanks to lower vibration magnitude as well as shorter trip time.

• Transactions of the Korean Society of Automotive Engineers
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• v.10 no.4
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• pp.93-99
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• 2002

Ride comfort, one of the most important performances of a car, is affected by vibration, noise, dynamic movement, and ergonomic factors. Among these factors, ride comfort vibration is heavily affected by the seat system, tire, suspension, and body structure. In this study, vibration characteristics of seat, tire, suspension, and body structure are analyzed. The vibration transfer function from the road input to the human body is also investigated.

• Journal of the Ergonomics Society of Korea
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• v.18 no.3
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• pp.179-186
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• 1999

This article aims to provide information necessary for the measurement and analysis of human vibration, especially hand-arm vibration. The major health problems associated with the use of powered hand tools are the signs and symptoms of peripheral vascular and peripheral neural disorders of the fingers and hands. To prevent these problems, it is the first and the most important to measure the amount of the vibration transmitted to the upper extremities, and analyze its characteristics against the exposure limits such as ISO standards. In our country, however, very few studies have been done on the hand-arm vibration. One of the possible reasons might be lack of knowledge for the measurement and analysis schemes. The information introduced in this article would hopefully be of help for the upcoming studies.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.10a
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• pp.643-646
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• 2009

This study was conducted to simulate the influence of vibration associated with cycling on the body. In this simulation the human model that the riding on a bicycle which have suspension and non-suspension front forks was used. And to arouse impact two kind of bump, 50mm height of radical raised spot and 150mm height of slow raised spot, were used. The vertical displacement of head, the vertical acceleration of head and the torque of neck joint were analysed. The results say that the function of shock absorbing was grater when passing though a 50mm height of radical raised spot then a 150mm height of slow raised spot.

• Journal of KSNVE
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• v.10 no.2
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• pp.299-305
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• 2000

In this study, the characteristics of transmitted vibration on hand-arm system are examined when operating electric hand tools. Also through the correlation analysis between anthroponetric data and transmitted vibration, and comparison study with appropriate amount of work done based on the ISO criteriaa, the basic data for the ergonomic work design can be presented. The types of electric tools and works for the experiment are drill (general type and impact type), grinder, wire brush and steel to analyze the characteristics of transmitted vibrations, the amount of transmitted vibrations in X, Y and Z direction at tool(T), hand(H), wrist(W), and the joint between foream and upper arm(A) were measured at the frequency range of 6.3∼1000[HZ]. Also, the limit of human exposure to vibration, and the response of frequency were conducted.

• Journal of KSNVE
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• v.14 no.5
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• pp.24-30
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• 2004

• Journal of KSNVE
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• v.20 no.3
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• pp.7-12
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• 2010

• Journal of KSNVE
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• v.8 no.6
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• pp.1009-1014
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• 1998

유럽 18개 국가의 표준제정기구가 회원으로 구성되어 있는 유럽 규격제정 위원회(CEN：Comite europeen de Normalisation 또는 European Committee on Standardization)는 유럽 내에서 시판. 사용되는 모든 제품이 만족해야 할 규격 또는 규제안(regulation)을 제정하는 일을 담당하고 있다. 이들이 제정하는 규격의 기본적인 내용은 국제규격이나 각 나라의 규격과 대동소이하지만 그 내용에 있어서 구체적인 제품을 지정하기 때문에 보다 세분화되어 있으며 상업적인 성격을 띈다는 측면에서 ISO, DIN. BS등의 국제표준규격과 성격을 달리한다고 할 수 있다 특히, 이 위원회에서 공동으로 제정된 사안은 각 회원국에서 수정 없이 그대로 국가 인증규격으로 사용하므로 산업계에서는 상당한 영향력을 지닌 기구라고 할 수 있다.(중략)

• Journal of the korean Society of Automotive Engineers
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• v.23 no.2
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• pp.72-78
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• 2001