Title: Application of high strength steel sheets for motor car bumpers

Authors: M. Shiokawa, T. Furubayashi, H. Nousho, K. Yamazaki, T. Tanaka, M. Fukuda

Addresses: Engineering Department No. 2, Nissan Motor Co., Ltd., Tokyo, Japan. ' Kyushu Plant Production Control and Engineering Dept., Nissan Motor Co., Ltd., Tokyo, Japan. ' Central Engineering Laboratories, Research Planning Dept., Nissan Motor Co., Ltd., Tokyo, Japan. ' Oppama Plant, Manufacturing Department No. 2, Nissan Motor Co., Ltd., Tokyo, Japan. ' Body Design Department, Nissan Motor Co., Ltd., Tokyo, Japan. ' Product Design Administration Department, Nissan Motor Co., Ltd., Tokyo, Japan

Abstract: This paper discusses the characteristics of materials used to manufacture impact-resistant parts. Experiments and analyses are described in evaluating material behaviour on the basis of its formability and other requisite properties. The results indicate that impact resistance strength cannot be determined by yield point (YS) and tensile strength (TS) alone, as is normally done. However, it can be correlated to their mean value (YS + TS)/2. It is found that as the mean value increases, the impact resistance strength also increases. From the standpoint of formability, a lower YS value yields more favourable results.

Keywords: vehicle bumpers; door guard bars; dual-phase steels; steel formability; high strength steels; impact resistant parts; impact strength; steel sheets; vehicle design; impact resistance; vehicle impact.

DOI: 10.1504/IJVD.1983.061314

International Journal of Vehicle Design, 1983 Vol.4 No.3, pp.245 - 257

Published online: 25 May 2014 *

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