scholarly journals RESIDUAL STRESS REDUCTION OF FILLET BOX WELDED JOINTS BY LOCAL HEATING USING INDUCTION HEATING DEVICE

2020 ◽  
Vol 76 (1) ◽  
pp. 29-40
Author(s):  
Mikihito HIROHATA ◽  
Aung May PHYO ◽  
Kazunori ANI
Keyword(s):  
Residual Stress ◽  
Induction Heating ◽  
Stress Reduction ◽  
Welded Joints ◽  
Local Heating ◽  
Heating Device

scholarly journals RESIDUAL STRESS REDUCTION OF FILLET BOX WELDED JOINTS BY LOCAL HEATING USING INDUCTION HEATING DEVICE

2020 ◽  
Vol 8 (1) ◽  
pp. 194-206
Author(s):  
Mikihito HIROHATA ◽  
May Phyo AUNG ◽  
Kazunori ANI
Keyword(s):  
Residual Stress ◽  
Induction Heating ◽  
Stress Reduction ◽  
Welded Joints ◽  
Local Heating ◽  
Heating Device

IMPROVEMENT OF RESIDUAL STRESS ON GUSSET WELDED JOINTS BY HEAT TREATMENT WITH INDUCTION HEATING

2018 ◽  
Author(s):  
May Phyo AUNG ◽  
◽  
Mikihito HIROHATA ◽  
Yasuo KITANE ◽  
◽  
...  
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Induction Heating ◽  
Welded Joints

Study on Cancer Treatment using Magnetic Fluid for Medicine and Induction Heating Device

2013 ◽  
Vol 133 (6) ◽  
pp. 366-371 ◽  
Author(s):  
Hideo Nagae ◽  
Sotoshi Yamada ◽  
Yoshio Ikehata ◽  
Satoshi Yagitani ◽  
Isamu Nagano
Keyword(s):  
Cancer Treatment ◽  
Induction Heating ◽  
Magnetic Fluid ◽  
Heating Device

Residual Stress Release and Its Effects on the Fatigue Strength of Typical Welded Joints in Cone-Cylinder Pressure Structures

2021 ◽  
Vol 111 ◽  
pp. 102673
Author(s):  
Liangbi Li ◽  
Jingxi Zhang ◽  
Yiwen Zhang ◽  
Deqin Zhu ◽  
Zhengquan Wan ◽  
...  
Keyword(s):  
Residual Stress ◽  
Fatigue Strength ◽  
Welded Joints ◽  
Cylinder Pressure ◽  
Stress Release

scholarly journals Optimization Study of Post-Weld Heat Treatment for 12Cr1MoV Pipe Welded Joint

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 127
Author(s):  
Zichen Liu ◽  
Xiaodong Hu ◽  
Zhiwei Yang ◽  
Bin Yang ◽  
Jingkai Chen ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Stress Reduction ◽  
Simulation Method ◽  
Post Weld Heat Treatment ◽  
Residual Stress Field ◽  
Element Analysis ◽  
Tempering Treatment ◽  
Temper Heat Treatment ◽  
Weld Heat

In order to clarify the role of different post-weld heat treatment processes in the manufacturing process, welding tests, post-weld heat treatment tests, and finite element analysis (FEA) are carried out for 12C1MoV steel pipes. The simulated temperature field and residual stress field agree well with the measured results, which indicates that the simulation method is available. The influence of post-weld heat treatment process parameters on residual stress reduction results is further analyzed. It is found that the post weld dehydrogenation treatment could not release residual stress obviously. However, the residual stress can be relieved by 65% with tempering treatment. The stress relief effect of “post weld dehydrogenation treatment + temper heat treatment” is same with that of “temper heat treatment”. The higher the temperature, the greater the residual stress reduction, when the peak temperature is at 650–750 °C, especially for the stress concentration area. The longer holding time has no obvious positive effect on the reduction of residual stress.

In Situ Thin Film Stress Measurements – A Path to Understanding the Structure and Morphology of Electron Beam Evaporated ZnS

2002 ◽  
Vol 749 ◽  
Author(s):  
Vincent Barrioz ◽  
Stuart J. C. Irvine ◽  
D. Paul
Keyword(s):  
Residual Stress ◽  
Surface Roughness ◽  
Electron Beam ◽  
Stress Reduction ◽  
Float Glass ◽  
Film Stress ◽  
Intrinsic Stress ◽  
Ex Situ ◽  
Stress Measurements

ABSTRACTZnS is a material of choice in the optical coating industry for its optical properties and broad transparency range. One of the drawbacks of ZnS is that it develops high compressive intrinsic stress resulting in large residual stress in the deposited layer. This paper concentrates on the evolution of residual stress reduction in ZnS single layers, depending upon their deposition rate or the substrate temperature during deposition (i.e. 22 °C and 133 °C). The substrate preparation is addressed for consideration of layer adhesion. Residual stress of up to − 550 MPa has been observed in amorphous/poor polycrystalline ZnS layers, deposited on CMX and Float glass type substrates, by electron beam evaporation at 22 °C, with a surface roughness between 0.4 and 0.8 nm. At 133 °C, the layer had a surface roughness of 1 nm, the residual stress in the layer decreased to − 150 MPa, developing a wurtzite structure with a (002) preferred orientation. In situ stress measurements, using a novel optical approach with a laser-fibre system, were carried out to identify the various sources of stress. A description of this novel in situ stress monitor and its advantages are outlined. The residual stress values were supported by two ex situ stress techniques. The surface morphology analysis of the ZnS layers was carried out using an atomic force microscope (AFM), and showed that stress reduced layers actually gave rougher surfaces.

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