Original Paper (Vol.50 No.10)

Fatigue Crack Propagation Paths Across the Interface of Macroscopic Hardness Discontinuity in Material
Kiyotsugu OHJI, Yoshitaka MISAKA, Takeshi HORIKAWA, Tetsuya TSUJIKAMI, Satoru NAKAI, Takashi MORI and Yoshinori YAMANA	1056
Fatigue Behaviour and Fracture Mechanisms in 6063 Aluminium Alloy
Keiro TOKAJI, Zhenzhong CHEN and Yoji GOSHIMA	1062
Effect of Hydrogen Trapped by Inclusions on Ultra-Long Life Fatigue Failure of Bearing Steel
Yukitaka MURAKAMI, Naoko Nancy YOKOYAMA and Kenichi TAKAI	1068
Fatigue Life Distributions and Fracture Types of Ti-6Al-4V Alloy
Hiroyuki OGUMA, Takashi NAKAMURA and Toru NOGUCHI	1074
Fatigue Strength Properties of Ultra Thin WC-Co Alloy Plates Machined by Wire Electric Discharge
Koh-ichi SUGIMOTO, Kazuki OOIE, Kiyoshi NAKAZAWA, Sugio UCHIDA and Setsuya MASUDA	1080
Fatigue Strength Improvement of Lap Joints of Thin Steel Plates for Automobile Use by Using Low Transformation Temperature Welding Material
Akihiko OHTA, Kazuyoshi MATSUOKA, Ninh T. NGUYEN, Yoshio MAEDA and Naoyuki SUZUKI	1086
Effects of Prestraining on High Cycle Fatigue Strength of High Strength Low Alloy TRIP Steels
Sung-Moo SONG, Koh-ichi SUGIMOTO, Shinsuke KANDAKA, Asahiko FUTAMURA, Mitsuyuki KOBAYASHI and Setsuya MASUDA	1091
Mode ‡V Fatigue Crack Growth Behavior -Transition Condition of the Crack Growth Mode-
Yukiyoshi KOBAYASHI, Shoji HARADA, Yoshihito KUROSHIMA, Yasunobu FUKUDA and Ryouhei MIYOSHI	1098
Propagation Behavior of Mode ‡U and Mode ‡V Fatigue Cracks in SS400 Carbon Steel
Shigetomo NUNOMURA,Yasuhiro YAMAZAKI and Hideharu OOTAKI	1102
A New Test Method for Mode ‡U Fatigue Crack Growth in Hard Materials
Yukio FUJII, Kikuo MAEDA and Akio OTSUKA	1108