Evaluation of effect of plate thickness on fatigue strength of butt welded joints by a test maintaining maximum stress at yield strength

1990 ◽  
Vol 37 (5) ◽  
pp. 987-993 ◽  
Author(s):  
Ohta Akihiko ◽  
Mawari Toshio ◽  
Suzuki Naoyuki
Keyword(s):  
Fatigue Strength ◽  
Yield Strength ◽  
Welded Joints ◽  
Maximum Stress ◽  
Plate Thickness

Fatigue strength of non-load-carrying cruciform welded joints by a test maintaining maximum stress at yield strength

1994 ◽  
Vol 49 (4) ◽  
pp. 639-645 ◽  
Author(s):  
Ohta Akihiko ◽  
Matsuoka Kazuyoshi ◽  
Suzuki Naoyuki ◽  
Maeda Yoshio
Keyword(s):  
Fatigue Strength ◽  
Yield Strength ◽  
Welded Joints ◽  
Maximum Stress ◽  
Load Carrying

Variable effects of stress relief on fatigue strength of butt welded joints with different plate thickness

1984 ◽  
Vol 24 (3) ◽  
pp. R81-R87 ◽  
Author(s):  
Akihiko Ohta ◽  
Yoshio Maeda ◽  
Masatoshi Nihei ◽  
Satoshi Nishijima
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Plate Thickness ◽  
Stress Relief ◽  
Effects Of Stress

scholarly journals Approximation of limit amplitude diagram for destructive elements of safety devices

2020 ◽  
Vol 164 ◽  
pp. 14009
Author(s):  
Viktor Artiukh ◽  
Vladlen Mazur ◽  
Yurii Sahirov ◽  
Yuri Geraskin
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Yield Strength ◽  
Linear Approximation ◽  
Safety Factor ◽  
Maximum Stress ◽  
Iron And Steel ◽  
Safety Devices ◽  
Iron And Steel Works ◽  
Limit Amplitude

The maximum stress of the cycle should be limited not by yield strength but by tensile strength of detail material intended to be destructed. Therefore, such widespread linear approximations of Haigh diagram and conditions of Soderberg and Serensen-Kinasoshvili are not applicable for such details. Safety factor of fatigue strength of safety devices destructive elements should not exceed 1.0. Therefore, it is undesirable to use modified condition of Goodman for destructive elements. Two new variants of linear approximation of Haigh limit amplitudes diagram were developed. Both variants have proven their efficiency in design and operation of safety devices with destructive elements in framework of laboratory ‘Protection of metallurgical machines from breakdowns’ of the Chief mechanic department of PJSC ‘ILYICH IRON AND STEEL WORKS’ (Mariupol city, Ukraine).

Fatigue Strength Evaluation of the Load-Carrying Cruciform Fillet Welded Joints Using Hot-Spot Stress

2006 ◽  
Vol 324-325 ◽  
pp. 1281-1284 ◽  
Author(s):  
Byeong Wook Noh ◽  
Jung I. Song ◽  
Sung In Bae
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Hot Spot ◽  
Plate Thickness ◽  
Structural Stress ◽  
Leg Length ◽  
Element Analysis ◽  
Hot Spot Stress ◽  
Load Carrying ◽  
Weld Toe

In this study, fatigue strength of load-carrying cruciform fillet welded joints were evaluated using a new method proposed by Yamada, for geometric or structural stress in welded joint, that is, one-millimeter stress below the surface in the direction corresponding to the expected crack path. Validity of the method is verified by analyzing fatigue test results for load-carrying cruciform welded specimens has different size of weld toe radius, leg length and plate thickness reported in literature. Structural stress concentration factor for 1mm below the surface was calculated by finite element analysis for each specimen respectively. When compared to the basic fatigue resistance curve offered by BS7608, the one-millimeter stress method shows conservative evaluation for load-carrying cruciform fillet welded joints.

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