Relationships between occupant motion and seat characteristics in low-speed rear impacts

Yoichi Watanabe; Hideaki Ichikawa; Osamu Kayama; Koshiro Ono; Koji Kaneoka; Satoshi Inami

doi:10.4271/1999-01-0635

Relationships between occupant motion and seat characteristics in low-speed rear impacts

Yoichi Watanabe, Hideaki Ichikawa, Osamu Kayama, Koshiro Ono, Koji Kaneoka, Satoshi Inami

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

Sled tests were conducted with some seats which had different characteristics to understand the relationships between occupant motion and seat characteristics in lowspeed rear impacts. The position of the head restraint and the stiffness distribution of the seatback were selected as parameters expressing seat characteristics. Volunteer's cervical vertebral motions were photographed with an x-ray cineradiographic system at a speed of 90 frames/sec as well as the visible motions of dummy's and volunteer's were recorded. The results indicated the head restraint position and upper seatback stiffness influenced occupant motions. Correlations between visible motions, such as ramping-up, retraction and extension, were also analyzed and some correlations were found.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/1999-01-0635
Publication status	Published - 1999 Jan 1
Externally published	Yes
Event	International Congress and Exposition - Detroit, MI, United States Duration: 1999 Mar 1 → 1999 Mar 4

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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title = "Relationships between occupant motion and seat characteristics in low-speed rear impacts",

abstract = "Sled tests were conducted with some seats which had different characteristics to understand the relationships between occupant motion and seat characteristics in lowspeed rear impacts. The position of the head restraint and the stiffness distribution of the seatback were selected as parameters expressing seat characteristics. Volunteer's cervical vertebral motions were photographed with an x-ray cineradiographic system at a speed of 90 frames/sec as well as the visible motions of dummy's and volunteer's were recorded. The results indicated the head restraint position and upper seatback stiffness influenced occupant motions. Correlations between visible motions, such as ramping-up, retraction and extension, were also analyzed and some correlations were found.",

author = "Yoichi Watanabe and Hideaki Ichikawa and Osamu Kayama and Koshiro Ono and Koji Kaneoka and Satoshi Inami",

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T1 - Relationships between occupant motion and seat characteristics in low-speed rear impacts

AU - Watanabe, Yoichi

AU - Ichikawa, Hideaki

AU - Kayama, Osamu

AU - Ono, Koshiro

AU - Kaneoka, Koji

AU - Inami, Satoshi

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Sled tests were conducted with some seats which had different characteristics to understand the relationships between occupant motion and seat characteristics in lowspeed rear impacts. The position of the head restraint and the stiffness distribution of the seatback were selected as parameters expressing seat characteristics. Volunteer's cervical vertebral motions were photographed with an x-ray cineradiographic system at a speed of 90 frames/sec as well as the visible motions of dummy's and volunteer's were recorded. The results indicated the head restraint position and upper seatback stiffness influenced occupant motions. Correlations between visible motions, such as ramping-up, retraction and extension, were also analyzed and some correlations were found.

AB - Sled tests were conducted with some seats which had different characteristics to understand the relationships between occupant motion and seat characteristics in lowspeed rear impacts. The position of the head restraint and the stiffness distribution of the seatback were selected as parameters expressing seat characteristics. Volunteer's cervical vertebral motions were photographed with an x-ray cineradiographic system at a speed of 90 frames/sec as well as the visible motions of dummy's and volunteer's were recorded. The results indicated the head restraint position and upper seatback stiffness influenced occupant motions. Correlations between visible motions, such as ramping-up, retraction and extension, were also analyzed and some correlations were found.

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