A method of experimental design was used to obtain mathematical models for optimizing the thickness H of flat square cross section specimens (b=100 mm) to determine modulus of elasticity Et, relative ultimate strain εet and ultimate strength σmt.
A square-cross-section specimen with a shallow crack of a/W=0.15 is also considered to examine the effect of crack depth.
A low magnification image of the cross-section specimen of the Cr/Al/MWCNT-SiN/Cr/Al sandwich sample is presented in Figure 2. It confirms the structure expected from preparation, sketched in Figure 1.
The preparation procedures of cross-section specimen for HRTEM observation are as follows: The films with substrate were cut into two pieces and adhered face to face, which subsequently cut at the joint position to make a slice.
This technique has been successfully applied to circular cross-section specimens made of S45 steel.
The paper presents the fatigue test results of rectangular cross-section specimens made of 10HNAP (steel2G1W) steel.
Figure 1 (Left) Bright field images from cross-section specimens from the films with nominal thicknesses: (a) 5 nm, (b) 15 nm, and (c) 30 nm, respectively, revealing the evolution of the columnar structure as the thickness increases.
Scaffolds were quenched in liquid nitrogen to get cross-section specimens.
Although the specimens using the #1 material didn't exhibit any cracks in the surface cross section, these specimens experienced a much greater weight loss than specimens made from the other materials, making material #1 a poor choice of steel for actual wheels for economic reasons.
Open image in new window Fig. 1 Details of the test specimens (unit: mm). a Cross section, b SB1 specimen, c SB2 specimen (s = 0.75d), d SB3 specimen (s = 0.5d), e SB4 specimen (s = 0.3d).
The cross section of specimens could be divided into several small patches.
