Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 11, Problem 11.8P
To determine
The number of specimen fails in the test.
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In a tensile test for an aluminum alloy, the sample is 2 inches long and 0.5 inches in diameter. The proportional portion of the tension stress-strain diagram for an aluminum alloy is shown below.
It the diameter change of the sample was also monitored during the above test, and it was found that the lateral strain of the sample is 1/3 of its axial longitudinal strain, what is the Poisson' ratio of the material under test: ___. Calculate your answer to 2 decimal place.
Q.24 During a high cycle fatigue test, a metallic specimen is subjected to cyclic loading with
a mean stress of +140 MPa, and a minimum stress of -70 MPa. The R-ratio (minimum
stress to maximum stress) for this cyclic loading is (round off to one decimal
place)
A single crystal of a metal is oriented for a tensile test such that its slip plane normal makes an angle of 64.0° with the tensile axis.
Three possible slip directions make angles of 30°, 48°, and 78° with the same tensile axis.
(a) Which of these three slip directions is most favored?
i
(b) If plastic deformation begins at a tensile stress of 1.3 MPa (188.6 psi), determine the critical resolved shear stress for this metal.
i
MPа
Chapter 11 Solutions
Materials Science And Engineering Properties
Ch. 11 - Prob. 1CQCh. 11 - Prob. 2CQCh. 11 - Prob. 3CQCh. 11 - Prob. 4CQCh. 11 - Prob. 5CQCh. 11 - Prob. 6CQCh. 11 - Prob. 7CQCh. 11 - Prob. 8CQCh. 11 - Prob. 9CQCh. 11 - Prob. 10CQ
Ch. 11 - Prob. 11CQCh. 11 - Prob. 12CQCh. 11 - Prob. 13CQCh. 11 - Prob. 14CQCh. 11 - Prob. 15CQCh. 11 - Prob. 16CQCh. 11 - Prob. 17CQCh. 11 - Prob. 18CQCh. 11 - Prob. 19CQCh. 11 - Prob. 20CQCh. 11 - Prob. 21CQCh. 11 - Prob. 22CQCh. 11 - Prob. 23CQCh. 11 - Prob. 24CQCh. 11 - Prob. 25CQCh. 11 - Prob. 26CQCh. 11 - Prob. 27CQCh. 11 - Prob. 28CQCh. 11 - Prob. 29CQCh. 11 - Prob. 30CQCh. 11 - Prob. 1ETSQCh. 11 - Prob. 2ETSQCh. 11 - Prob. 3ETSQCh. 11 - Prob. 4ETSQCh. 11 - Prob. 5ETSQCh. 11 - Prob. 6ETSQCh. 11 - Prob. 7ETSQCh. 11 - Prob. 8ETSQCh. 11 - Prob. 9ETSQCh. 11 - Prob. 10ETSQCh. 11 - Prob. 11.1PCh. 11 - Prob. 11.2PCh. 11 - Prob. 11.3PCh. 11 - Prob. 11.4PCh. 11 - Prob. 11.5PCh. 11 - Prob. 11.6PCh. 11 - Prob. 11.7PCh. 11 - Prob. 11.8PCh. 11 - Prob. 11.9PCh. 11 - Prob. 11.10PCh. 11 - Prob. 11.11PCh. 11 - Prob. 11.12PCh. 11 - Prob. 11.13PCh. 11 - Prob. 11.14P
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- During the tensile test a sample of metal having an initial diameter of 2.00 in., is reduced to a 30% reduction in area. If the stress-strain behavior of this metal sample is expressed as o=80,000€ 0.25 psi, determine the new yield strength of the sample.arrow_forwardUsing the AASHTO T 283 test, three HMA specimens were freeze–thawconditioned and three were unconditioned. All the specimens had a diameterof 150 mm. Table P9.40 shows the thickness and load at failure of each specimen. Determine:a. The tensile strength of each specimen in MPa.b. The average tensile strength of the conditioned and unconditionedspecimens.c. The tensile strength ratio (TSR).d. Does the mix pass the Superpave criteria for moisture susceptibility?arrow_forwardA ceramic specimen having a circular cross section of radius 2.7mm is subjected to a load of 900N. The distance between the support point is 43mm. Another test is to be performed on a specimen of this same material, but one that has a square cross section of 10mm on each edge. At what load (in N) would you expect the specimen to fracture if the support point separation is 38mm?arrow_forward
- During a high cycle fatigue test, a metallic specimen is subjected to cyclic loading with a mean stress of +140 MPa, and a minimum stress of -70 MPa. What is the R- ratio (minimum stress to maximum stress) for this cyclic loading?arrow_forward(a) Using Animated Figure, compute the rupture lifetime for an S-590 alloy that is exposed to a tensile stress of 100 MPa at 925°C. (b) Determine the same value from the Larson-Miller plot of Animated Figure, which is for this same S-590 alloy. (a) i hours (b) i hoursarrow_forwardA three-point bending test was performed on an aluminum oxide specimen having a circular cross section of radius 5.0 mm (0.20 in.); the specimen fractured at a load of 3000 N (675 lbf) when the distance between the support points was 40 mm (1.6 in.). Another test is to be performed on a specimen of this same material, but one that has a square cross section of 15 mm (0.6 in.) length on each edge. At what load would you expect this specimen to fracture if the support point separation is maintained at 40 mm (1.6 in.)?arrow_forward
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