scholarly journals STUDY ON RESISTANCE AGAINST CRACK OF STEEL MEMBER WITH GEOMETRICAL DISCONTINUITY

2003 ◽  
Vol 68 (570) ◽  
pp. 151-158
Author(s):  
Yuka MATSUMOTO ◽  
Masatoshi IDE ◽  
Hirofumi AOKI ◽  
Satoshi YAMADA ◽  
Hiroshi AKIYAMA
Keyword(s):  
Geometrical Discontinuity

Analytical and numerical modeling of an axisymmetrical electrostatic transducer with interior geometrical discontinuity

2013 ◽  
Vol 134 (5) ◽  
pp. 3573-3579 ◽  
Author(s):  
Petr Honzík ◽  
Alexey Podkovskiy ◽  
Stéphane Durand ◽  
Nicolas Joly ◽  
Michel Bruneau
Keyword(s):  
Numerical Modeling ◽  
Geometrical Discontinuity

Electron Flow through Geometrical Discontinuity in Coaxial Magnetically Insulated Transmission Lines

2000 ◽  
Vol 39 (Part 1, No. 9A) ◽  
pp. 5280-5286 ◽  
Author(s):  
Kazuki Hiraoka ◽  
Mitsuo Nakajima ◽  
Makoto Shiho ◽  
Kazuhiko Horioka
Keyword(s):  
Transmission Lines ◽  
Electron Flow ◽  
Flow Through ◽  
Geometrical Discontinuity

scholarly journals Effective Impedance of Magnetically Insulated Transmission Lines with Geometrical Discontinuity

2000 ◽  
Vol 120 (2) ◽  
pp. 218-224
Author(s):  
Kazuki Hiraoka ◽  
Mitsuo Nakajima ◽  
Makoto Shiho ◽  
Kazuhiko Horioka
Keyword(s):  
Transmission Lines ◽  
Effective Impedance ◽  
Geometrical Discontinuity

Fracture Assessment of Welded Joint With Geometrical Discontinuity Using the Weibull Stress

2006 ◽  
Author(s):  
Satoshi Igi ◽  
Takahiro Kubo ◽  
Masayoshi Kurihara ◽  
Fumiyoshi Minami
Keyword(s):  
Fracture Toughness ◽  
Brittle Fracture ◽  
Welded Joint ◽  
Fracture Toughness Test ◽  
Geometrical Condition ◽  
Stress Criterion ◽  
Toughness Test ◽  
Fracture Assessment ◽  
Geometrical Discontinuity ◽  
Weibull Stress

Recently the Weibull stress is used as a fracture driving force parameter in fracture assessment. The Weibull stress is derived from a statistical analysis of local instability of micro cracks leading to brittle fracture initiation. The critical Weibull stress is expected to be a critical parameter independent of the geometrical condition of specimens. Fracture toughness test using 3-point bending and tensile tests of welded joint specimens with geometrical discontinuity were conducted in order to study the applicability of fracture assessment procedure based on Weibull stress criterion. Steel plates prepared for this study had tensile strength of 490 MPa for structural use. Two kinds of welded joint specimens, “one-bead welded joint” and “multi-pass welded joint” were prepared for fracture toughness test by using gas metal are welding. In tensile test specimen, corner flaws were introduced at the geometrical discontinuity part at where stress concentration is existed. Three dimensional elastoplastic finite element analyses were also carried out using the welded joint specimen models in order to calculate the Weibull stress. The critical loads for brittle fracture predicted by the Weibull stress criterion from CTOD test results of one-bead and multi-pass welded joint specimens show fairly good agreement with experimental results of welded joint specimens with geometrical discontinuity.

Effective impedance of magnetically insulated transmission lines with geometrical discontinuity

2001 ◽  
Vol 135 (4) ◽  
pp. 9-16
Author(s):  
Kazuki Hiraoka ◽  
Mitsuo Nakajima ◽  
Makoto Shiho ◽  
Kazuhiko Horioka
Keyword(s):  
Transmission Lines ◽  
Effective Impedance ◽  
Geometrical Discontinuity

Fretting Fatigue Behavior of Riveted Al 6XXX Components

2010 ◽  
Vol 34-35 ◽  
pp. 1388-1392 ◽  
Author(s):  
Ji Xiang Luo ◽  
Chun Tang
Keyword(s):  
Material Properties ◽  
Applied Load ◽  
Crack Formation ◽  
Fatigue Behavior ◽  
Fretting Fatigue ◽  
Contact Friction ◽  
Strain Gauges ◽  
Finite Element Models ◽  
Geometrical Discontinuity ◽  
Remote Stress

The riveting is widely used for fitting together two or more elements of structure in the same or different materials. In these assemblies the stress field is complex, we have to consider the effect of the geometrical discontinuity, the contact, the tightening, the material properties and the applied load. The current work focus on the study of fretting fatigue crack formation in common 6XXX aluminum alloys, used in land transportation equipments, and uncovering characteristic origins of crack by experimental and numerical methods based on multi-axial fatigue life models. 3D finite element models were validated by the experimental results obtained with strain gauges. The influences of the contact friction coefficient at the fretting surface, the fastening forces and the remote stress applied in the fretting fatigue experiments on the crack origins are discussed by the comparison of the different numerical results.

Damage Mechanics Considerations for Life Extension of High-Temperature Components

1999 ◽  
Vol 122 (2) ◽  
pp. 174-179 ◽  
Author(s):  
Xiang Ling ◽  
Shan-Tung Tu ◽  
Jian-Ming Gong
Keyword(s):  
Numerical Scheme ◽  
Damage Mechanics ◽  
Creep Damage ◽  
Life Extension ◽  
Continuum Damage ◽  
Damage Distribution ◽  
Damage Theory ◽  
Geometrical Discontinuity ◽  
High Temperature Components ◽  
Damage Simulation

Continuum damage theory has proven to be an effective tool in creep damage simulation. In order to establish some mechanical principles for life extension of components at elevated temperature, a numerical scheme based on the localized creep damage theory is introduced. To illustrate the strength potential of structures for life extension, the method is first applied to a simple case of two-bar structure. Typical components of geometrical discontinuity, material discontinuity, and temperature inhomogenity are then analyzed. In terms of the damage distribution or life exhaustion of the components, some principles for life extension are proposed. [S0094-9930(00)00202-X]

2E34 Experiment and FE Analysis of Artificial Artery Model with Geometrical Discontinuity

2015 ◽  
Vol 2015.27 (0) ◽  
pp. 507-508
Author(s):  
Hiroya NAKAGAWA ◽  
Atsushi SAKUMA ◽  
Haruki KAKYO ◽  
Yuma SHIRAISHI
Keyword(s):  
Fe Analysis ◽  
Geometrical Discontinuity

scholarly journals Part-Through Crack Bending Fatigue Life Prediction of a Plate with Geometrical Discontinuity (Part I)

1982 ◽  
Vol 1982 (151) ◽  
pp. 245-259
Author(s):  
Yoshihiko Mukai ◽  
Hiroshi Matsuno ◽  
Shinji Yamasaki ◽  
Tatsuhiko Tsunoo ◽  
Moriaki Ono ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Bending Fatigue ◽  
Geometrical Discontinuity
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