scholarly journals Analysis for Isotropic Elastic Medium with Multi-Layered Elliptic Inclusions under Out-of-Plane Normal Stress

2006 ◽  
Vol 55 (1) ◽  
pp. 8-14
Author(s):  
Takeshi TANE ◽  
Ken-ichi HIRASHIMA ◽  
Masashi KUROSE
Keyword(s):  
Elastic Medium ◽  
Normal Stress ◽  
Plane Normal ◽  
Out Of Plane ◽  
Isotropic Elastic Medium

Evaluation of the Accuracy of Out-of-Plane Normal Stress Detection Using Novel Piezoresistive CMOS Sensors

2009 ◽  
Author(s):  
Benjamin Lemke ◽  
Rajashree Baskaran ◽  
Oliver Paul
Keyword(s):  
Normal Stress ◽  
Stress Component ◽  
Stress Detection ◽  
Free Surfaces ◽  
Plane Normal ◽  
Uncertainty Sources ◽  
Stress Components ◽  
Normal Stress Component ◽  
Out Of Plane ◽  
The Individual

This paper discusses the measurement opportunities arising from a novel piezoresistance sensor featuring vertical currents. Temperature-compensated measurements of a sum of the three normal stress components including the vertical normal stress, are presented. In specific applications with sensors located at free surfaces where the vertical normal stress component vanishes, a combination of this temperature-compensated measurement and a pseudo-Hall measurement yields the individual in-plane normal stresses. Furthermore, the temperature-uncompensated extraction of the vertical normal stress component is discussed with respect to the new measurement possibilities provided by the presented sensor. A sensitivity analysis illustrates the influence of individual uncertainty sources to the overall uncertainty of the measurement. Based on these results possible improvements in stress detection are suggested.

Piezoresistive CMOS sensor for out-of-plane normal stress

2012 ◽  
Vol 176 ◽  
pp. 10-18 ◽  
Author(s):  
Benjamin Lemke ◽  
Rajashree Baskaran ◽  
Oliver Paul
Keyword(s):  
Normal Stress ◽  
Plane Normal ◽  
Cmos Sensor ◽  
Out Of Plane

X-ray measurement of triaxial residual stress on machined surfaces by the cosα method using a two-dimensional detector

2018 ◽  
Vol 51 (5) ◽  
pp. 1329-1338 ◽  
Author(s):  
Keisuke Tanaka
Keyword(s):  
Normal Stress ◽  
New Method ◽  
Shear Stresses ◽  
Plane Shear ◽  
X Ray ◽  
Plane Normal ◽  
Out Of Plane ◽  
Cutting Direction ◽  
Machined Surfaces

In recent years, the cosα method has attracted engineers as a new method of X-ray stress measurement using the whole Debye–Scherrer (D–S) ring recorded on a two-dimensional detector. The principle of the cosα method was first proposed by Taira, Tanaka & Yamasaki [J. Soc. Mater. Sci. Jpn, (1978),27, 251–256] for in-plane biaxial stress analysis and later extended by Sasaki and co-workers [Sasaki & Hirose (1995).Trans. Jpn Soc. Mech. Eng. Part A,61, 2288–2295; Sasaki, Takahashi, Sasaki & Kobayashi (2009).Trans. Jpn Soc. Mech. Eng. Part A,75, 219–227] to the triaxial state of stress. The method proposed by Sasaki and co-workers utilizes several D–S rings taken at different incident angles of X-rays in order to determine triaxial stresses. In the present paper, the cosα method was applied to measure triaxial residual stresses of uni-directionally machined surfaces of a carbon steel made by grinding, milling and planing. A recommended procedure for experimental measurements of in-plane normal and shear stresses and out-of-plane shear stress is proposed, together with a new method for determination of the out-of-plane normal stress. The tilt angle of X-ray incidence for stress determination is recommended to be larger than 35°, where the stress constant is low and the stress sensitivity is high. Normal incidence is recommended for the determination of out-of-plane shear stresses. The out-of-plane shear stress along the cutting direction was characteristic of uni-directionally machined surfaces and increased with cutting severity in the order of grinding, milling and planing. The in-plane normal stress was compressive for ground and milled surfaces, and the magnitude of compression was larger in the direction perpendicular to the cutting direction. On the basis of the stress values measured under different tilt angles, it is suggested that the magnitude of in-plane normal residual stress increases near the surface. The out-of-plane normal stress determined by the new method indicated a small compression.

scholarly journals Analysis of Elastic Medium with Nonconcentric Two Circular Inclusions under Out-of-Plane Shear Loading.

1998 ◽  
Vol 64 (618) ◽  
pp. 438-444 ◽  
Author(s):  
Kenichi HIRASHIMA ◽  
Shigerou NAKANE ◽  
Mutsumi MIYAGAWA ◽  
Shinji KIKUCHI
Keyword(s):  
Elastic Medium ◽  
Shear Loading ◽  
Plane Shear ◽  
Out Of Plane
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