However, this fracture feature also was observed for both Charpy V-notch specimen and tensile specimen
. In the study presented here, the cleavage like fracture was only observed during tensile testing.
(a) In situ tensile testing setup including a universal piezo stage, force sensor, and silicon wafer as a specimen holder, (b) SEM images before the test showing tensile specimen
bridging between force sensor and silicon holder.
Figure 2 shows an exemplar tensile specimen
with a speckle pattern.
The nonlinear response of tensile specimen
aluminum alloy was excited by using a RITEC SNAP RAM-5000 high power system (RITEC Inc., Warwick, RI, USA), and the high amplitude sinusoidal tone burst inputs with a few number of cycles at a stable single frequency.
Figure 5 shows the photograph of the tensile specimen
of before and after fracture.
The geometry of the tensile specimen
as per the ASTM E8 standard is shown in Figure 2 .
The process of 3D printing imparts voids in between the print rasters which effectively diminishes the cross-sectional area of a tensile specimen
and, thus, the UTS values.
Scanning electron microscopy (SEM) studies of the fractured surface of the tensile specimen
were carried out on a Jeol (6380LA, Japan).
At this point the average stress in the tensile specimen
is 353 MPa.
New ring expansion data provide the essential confirmation of both material purchasing specifications and pipeline designs based on conventional tensile specimen
Two tensile tests were performed using a 0.125-inchthick (3.18 mm) fiat tensile specimen
cut from the failed sleeve near one of the crack paths.