...Wuzhu Yan; Yaowei Wang; Shujing Liang; Shihui Huo Traditional unidirectional cold expansion technology usually generates non-uniform distribution of residual stress in the thickness direction of holes, which is harmful to the improvement of fatigue life of holes. The present work proposed a bi...

... welding austenitic stainless steel Inconel 718 Stainless steel 304 L microstructure mechanical properties filler material creep behavior residual stress The welding technique has been used for many years for joining similar and dissimilar materials. Dissimilar welding is subject...

...M. Perl; S. M. Kamal; Solomon Mulera The evaluation of equivalent temperature fields for cylindrical and spherical pressure vessels to imitate autofrettage-induced residual stresses has been successfully implemented in studying crack growth in autofrettaged vessels by the finite element method...

...Yuhui Huang; Fu-Zhen Xuan The effect of shot peening on oxidation behavior of P92 steel was investigated under the steam environment of 600 °C. Evolution of microstructure, hardness and residual stress under different air pressure of shot peening were discussed. On the shot peened surface, a stable...

... of loading plastic strain. This case study identifies the difference in stress distributions based on two different material models, a bilinear kinematic hardening model, and the BEC model. Near-bore residual stresses for the BEC case are noteworthy and reported in detail, e.g., axial residual stress...

... the compatibility equations. In addition, the incremental initial strains do not cause reaction forces at the symmetry boundaries, so that the incremental residual stress field vanishes. Due to the vanishing incremental residual stress field in the asymptotic solution, a single MEA at finite load level (e.g...

... strain and residual stress of the weld are analyzed in detail by considering solid-state phase transformation (SSPT). Besides, parametric optimization method is adopted to optimize the region of large stress distribution. By choosing the weld pass number as the optimized parameter, the area decreases...

... is the main design idea of high-pressure vessel. However, absorber integrity issues, due to corrosion, thermal stress, and residual stress caused by welds, can cause absorber deformation, strength degradation, and even explosion. In this paper, mathematical models for absorber strength degradation, due...

...Anthony P. Parker In this paper, numerical formulations are presented; these permit full thermal simulation of an arbitrary plane axisymmetric residual stress field encompassing hoop, radial, and axial stresses. Earlier formulations were based upon the determination of a temperature profile within...

.... The predicted residual stresses are compared with those measured by neutron diffraction. The results show that the dilution significantly affects the metallurgical and mechanical properties of weld metal (either as-deposited or reheated), and its consideration notably improves the predictions for microstructure...

...Rajkumar Shufen; Nilkamal Mahanta; Uday S. Dixit Recently, a heat treatment technique has been proposed to induce compressive residual stresses at the vicinity of the outer wall of a thermally autofrettaged cylinder. In the proposed technique, the outer wall of a thermally autofrettaged vessel...

... assumption. The closed form analytical solutions of the elasto-plastic stresses and strains and the residual stresses after unloading during the rotational autofrettage of a thick-walled cylinder are obtained. In Part II of the paper, the numerical evaluation of the theoretical model will be presented...

... ESSEL T ECHNOLOGY . Manuscript received August 8, 2018; final manuscript received June 27, 2019; published online July 15, 2019. Assoc. Editor: Bostjan Bezensek. 08 08 2018 27 06 2019 thick-walled cylinder rotational autofrettage angular velocity residual stress three...

...Yu Sun; Yun-Fei Jia; Muhammad Haroon; Huan-sheng Lai; Wenchun Jiang; Shan-Tung Tu To understand the residual stress distribution in the welded joints of high density polyethylene (HDPE) pipes is essential to the assessment of its structural integrity. However, limited knowledge of their residual...

...Meng Zhang; Zhanshu He; Yuanxi Zhang; Xingdong Wang; Shusen Zhao; Ting Fu; Lei Chen Abrasive waterjet (AWJ) peening can be used for metal surface strengthening by introducing near-surface plastic strain and compressive residual stress. The present studies seldom focus on residual stress by AWJ...

...S. M. Kamal Autofrettage is a means of generating compressive residual stresses at the inner side of a thick-walled cylinder or hollow disk by causing nonhomogeneous plastic deformation of the material at the inner side. The presence of residual compressive stresses at the inner region...

..., 2012; published online November 21, 2012. Assoc. Editor: Frederick W. Brust. 25 08 2011 30 05 2012 Residual stresses and deformation in the butt welding of an ultrathick tube-sheet in a large scale reactor are predicted by finite element method. The effect of applied load...

...Yuan Gexia; Liu Hongzhao To enhance the pressure capacity and the life of a pressure vessel, different processes such as shrink-fit and autofrettage are usually employed. For autofrettaged and shrink-fit multilayer cylinders, numerical solutions for determining the residual stress distribution...

... weld. For this purpose, the stress intensity factor and the plastic-zone correction of a corner crack are calculated under internal pressure, thermal stress, and residual stress in accordance with Electric Power Research Institute (EPRI) equation and Irwin’s approach, respectively. The resulting stress...

...M. Foroutan; M. E. Aalami-Aleagha; S. Feli; S. Nikabadi In this paper, the effect of hydrostatic testing internal pressure on the residual stresses of circumferentially butt-welded steel pipes is investigated by a three dimensional finite elements simulation based on ansys 11 code. Residual...