JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY vol.45 no.517 February 2004 ---CONTENTS--- Essay The Innovative Discovery form Scientific Heritage Itaru AOKI Page 1(75) Explanations The History and Used Blade Steel of gEchizen Uchihamono" Takumi YAMAMOTO Page 2(76) Recent Trend and Evaluation of Roll Forming Simulation Technique Based on Rigid-plastic Finite Element Approach Soo-Young KIM and Masahito YAMANAKA Page 7(81) Development of Wearable Power Assist Suit Keijiro YAMAMOTO Page 12(86) The State of the Art in Tube Hydroforming Technology in Japan Hideo ABE Page 18(82) Reports Report on Winners of the Excellent Paper-Presentation Award in the 54th Japanese Joint Conference for the Technology of Plasticity Yoshihiro GOTOH Page 25(99) International Workshop on Tube Hydroforming-TBEHYDRO2003- -THE ADVANCES IN TUBE HYDROFORMING TECHNOLOGY- Hidemitsu-HAMANO and Ken-ichi MANABE Page 26(100) Papers Effect of r-value on Forming Allowance for Hydroforming -A Research of Forming Allowance for Hydroforming 3- masaaki MIZUMURA and Yukihisa KURIYAMA Page 29(103) Simplified Three-Dimensional Finite Element Simulation of Shear Spinning Process Based on Axi-Symmetric Modeling Ken-ichiro MORI and Takayuki NONAKA Page 34(108) Finite Element Analysis for Behaveor of Hard Film-Forging Tool Material Interface by Interfacial Damage Mechanics Kunio HAYAKAWA,Tamotsu NAKAMURA,Kuniaki HARADA and Shigekazu TANAKA Page 39(113) Crowning Process of Sintered Fe Alloy Gears by Finish Rolling UsingScrew-Shaped Tool Teruie TAKEMASU,Tatsuo OZAKI,Ryoichi MATSUNAGA and Shigeru HOYASHITA Page 44(118) Stress-Based Forming Limit Criterion for Aluminum Alloy Tube Kengo YOSHIDA,Toshihiko KUWABARA,Kohji NARIHARA and Susumu TAKAHASHI Page 49(123) Copyright (C)1997- 2004 JSTP. All Rights Reserved.