A new method for determination of normal‐stress differences in highly viscoelastic substances using a modified Weissenberg rheometer

1994 ◽  
Vol 38 (4) ◽  
pp. 1169-1177 ◽  
Author(s):  
H. Eggers ◽  
P. Schümmer
Keyword(s):  
Normal Stress ◽  
New Method ◽  
Normal Stress Differences ◽  
Viscoelastic Substances

Determination of normal stress differences in steady shear flow

1968 ◽  
Vol 7 (4) ◽  
pp. 368-379 ◽  
Author(s):  
A. Kaye ◽  
A. S. Lodge ◽  
D. G. Vale
Keyword(s):  
Shear Flow ◽  
Normal Stress ◽  
Steady Shear ◽  
Steady Shear Flow ◽  
Normal Stress Differences

Determination of normal stress differences in steady shear flow

1968 ◽  
Vol 7 (4) ◽  
pp. 364-368 ◽  
Author(s):  
Judith M. Lipson ◽  
A. S. Lodge
Keyword(s):  
Shear Flow ◽  
Normal Stress ◽  
Steady Shear ◽  
Steady Shear Flow ◽  
Normal Stress Differences

Determination of normal-stress differences in steady shear flow

1971 ◽  
Vol 10 (4) ◽  
pp. 557-573 ◽  
Author(s):  
J. M. Broadbent ◽  
A. S. Lodge
Keyword(s):  
Shear Flow ◽  
Normal Stress ◽  
Steady Shear ◽  
Steady Shear Flow ◽  
Normal Stress Differences

Determination of the first and second normal stress differences in the truncated-cone-and-plate apparatus

1983 ◽  
Vol 10-10 (5-6) ◽  
Author(s):  
G.A. Alvarez ◽  
A.S. Lodge ◽  
H.-J. Cantow
Keyword(s):  
Normal Stress ◽  
Truncated Cone ◽  
Normal Stress Differences ◽  
Plate Apparatus

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.

A new method for the determination of nitrates

1960 ◽  
Vol 23 ◽  
pp. 227-232 ◽  
Author(s):  
P WEST ◽  
G LYLES
Keyword(s):  
New Method
Sign in / Sign up

Export Citation Format

Share Document