(m) Sketch cylindrical specimens and briefly indicate differences in applied stress states between the Constant Confining Pressure CCP (AASHTO T307-99) and Variable Confining Pressure VCP type repeated load triaxial tests on. Type I granular base/subbase materials. What important field conditions can be additionally simulated in the VCP type tests?

(m) Sketch cylindrical specimens and briefly indicate differences in applied stress states between the Constant Confining Pressure CCP (AASHTO T307-99) and Variable Confining Pressure VCP type repeated load triaxial tests on. Type I granular base/subbase materials. What important field conditions can be additionally simulated in the VCP type tests?

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter11: Fracture And Fatigue

Section: Chapter Questions

Problem 11.10P

See similar textbooks

Similar questions

I. Problem Solving: Answer what is being required. Show you complete solution. 1. Compute the compressive stress for the respective ages of the specimen. The diameter of the specimens is 150mm and the height is 300mm. Load (N) 176,000 Stress (MPa) Age 7days 14 days 28 days 252,000 340,000 2. Compute the tensile stress from the value acquired from the experiment if the breaking load is 105KN. The diameter of the specimen is 150mm and the height is 300mm. 3. Compute the flexural stress of the sample specimen if its dimension is 150mm x 150mm x 500mm in a 3 point loading. The effective length is 400mm. The specimen failed at 44,300N in the middle third. 4. Compression test was applied to a certain type of wood. Compute the stress based on the following dimensions. The grains are parallel with the length. а. Dimension (mm) Load (N) Compressive stress (МРа) Compression Test
Question 7: Given a 1050 HR steel, estimate (a) the rotating-beam endurance limit at 106 cycles. (b) the endurance strength of a polished rotating-beam specimen corresponding to 104 cycles to failure (c) the expected life of a polished rotating-beam specimen under a completely reversed stress of 55 kpsi.
A compact tension specimen is tested according to ASTM standard E399. The load displacement curve is shown in the Figure below with PQ= 120 kN (Type 1 curve). The specimen dimensions are B=0.5 cm, W=10 cm, and “a” =5 cm. If the materials yield stress is 600 MPa are the conditions correct for a valid K1C measurement? Please look up McEviley’s textbook on the thickness criterion for a valid fracture toughness value.
A hot rolled steel tension test sample has a diameter of 6 mm and the original gage length of 30 mm. In a test to fracture, the stress and strain data below were obtained. Determine Generic Strain Value, %0.2 offset strain, and Calculated stress at %0.2 offset. Original diameter - 6mm Original Length - 30 mm Fracture diameter - 4.54 mm
Using the AASHTO T 283 test, three HMA specimens were freeze-thaw conditioned and three were unconditioned. All the specimens had a diameter of 150 mm. Table P9.40 shows the thickness and load at failure of each speci- men. Determine: a. The tensile strength of each specimen in MPa. b. The average tensile strength of the conditioned and unconditioned specimens. c. The tensile strength ratio (TSR). d. Does the mix pass the Superpave criteria for moisture susceptibility? TABLE P9.40 Unconditioned Specimens Conditioned Specimens Thickness, mm 64 63 63 63 64 62 Load at failure, kN 11.5 10.5 10.8 9.0 9.5 9.2
I. Problem Solving: Answer what is being required. Show you complete solution. 1. Compute the tensile stress from the value acquired from the experiment if the breaking load is 105KN. The diameter of the specimen is 150mm and the height is 300mm. 2. Compute the flexural stress of the sample specimen if its dimension is 150mm x 150mm x 500mm in a 3 point loading. The effective length is 400mm. The specimen failed at 44,300N in the middle third. 3. Compression test was applied to a certain type of wood. Compute the stress based on the following dimensions. The grains are parallel with the length. а. Compression Test Dimension (mm) Load (N) Compressive stress (МРa)
A cylindrical specimen (E=205 GPa, d=38 mm, h=50 mm, n=0.25) is tested under compression. The specimen yields at 600 KN (0.2 % offset) and at a load of 1100 KN the corresponding height is 40 mm. Determine a) o, in MPa, b) total strain at the yield point (offsetted) c) the plastic strain under the load of 1100KN and d) the strength coefficient in MPа.
Q) If the failure of shearing stress in a steel plate is 2,300KN, determine (a) the force required to punch a 32 mm diameter hole in a 10mm thick plate and, (b) the corresponding normal stress ina punch. Explain it correctly
a) A tension test was carried out for a specimen having 610 mm in length and an average diameter of 12.80 mm. The test was conducted until the specimen failed. The data record from a tensile test for the specimen is given in Table 1. A 50 mm gauge length was marked on the specimen before load applied.Referring to the data in Table 1;i) Plot a stress-strain diagram by using a scale of 1:0.02 mm/mm for the x-axis and 1:40 MPa for the y-axis. Redraw the elastic region by using a strain scale of 1:0.004 min/mm.ii) Determine the approximate modulus of elasticity, ultimate stress, and the yield strength of this material at 0.20% offset.iii) Calculate the modulus of toughness.iv) Calculate the final length of the specimen, if the specimen elongated about 26.78%.v) Calculate the percentage of reduction of area and the final diameter at breakage, if the cross-section area decreases to 105.13 mm2
A 150mm diameter cylindrical concrete specimen was tested for splitting tensile strength. The Sample failed when the applied force was 120 kN. What is the splitting tensile stress at failure in MPa? The sample length is 300mm
A tension test is being conducted on a steel-rod specimen with a gauge length of L0=2 in and initial diameter of d0=0.5 in. Data were collected to form the conventional stress-strain diagram as shown. From the diagram, f = 74.0 ksi, e = 104.0 ksi , g = 85.0 ksi , and h = 0.15 in/in. Assuming that the strain remains constant throughout the region between the gauge points, determine the nominal strain ε experienced by the rod if it is elongated to L = 2.7 in . Assuming that the stress is constant over the cross-sectional area and if the tension force used is P = 11.0 kips, find the nominal stress experienced by the rod. Determine the force P needed to reach the ultimate stress in the steel-rod specimen.
Q) If the failure of shearing stress in a steel plate is 2,300KN, determine (a) the force required to punch a 32 mm diameter hole in a 10mm thick plate and, (b) the corresponding normal stress ina punch.