A. What is a suitable defect tolerance parameter and how can it be used to assess whether a component is likely to fail due to fast fracture or plastic collapse? B. What is the difference between the climb and glide movement of dislocation? C. Discuss briefly, using diagrams, the main differences between high-cycle fatigue failure and low-cycle fatigue failure and their associated life prediction methods.

A. What is a suitable defect tolerance parameter and how can it be used to assess whether a component is likely to fail due to fast fracture or plastic collapse? B. What is the difference between the climb and glide movement of dislocation? C. Discuss briefly, using diagrams, the main differences between high-cycle fatigue failure and low-cycle fatigue failure and their associated life prediction methods.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

1. On the drawing attached, before any geometric controls are applied, what is the coaxility tolerance that is implied between the diameters?
True or False a) If an accurate value for the notch sensitivity is hard to find, I should consider the fatigue stress concentration factor higher than the stress concentration factor under static loading condition in design. b) It is easier to find the asymptotic value of fatigue strength as the endurance limit on the S-N curve for a brass alloy (Cu70Zn30) than that of endurance limit on the S-N curve for an AISI 1045 steel. a good fatigue design should keep the fatigue design factor of safety at a minimum value of______________
In a tensile test on a specimen of black mild steel of 12 mm diameter, the following results were obtained for a gauge length of 60 mm. Load W(kN) 5 10 15 20 25 30 35 40 Extension x (10-3 mm) 14 27.2 41 54 67.6 81.2 96 112 When tested to destruction. Maximum load = 65 kN; load at fracture = 50 kN, diameter at fracture = 7.5 mm, total extension on gauge length = 17 mm. Find young's modulus, specific modulus, ultimate tensile stress, breaking stress, true stress at fracture, limit of proportionality, percentage elongation, percentage reduction in area. The relative density of the steel is 7.8. Draw the straight line graph.
In a tensile test on a specimen of black mild steel of 12 mm diameter, the following results were obtained for a gauge length of 60 mm. Load W(kN) 5 10 15 20 25 30 35 40 Extension x (10-3 mm) 14 27.2 41 54 67.6 81.2 96 112 When tested to destruction. Maximum load = 65 kN; load at fracture = 50 kN, diameter at fracture = 7.5 mm, total extension on gauge length = 17 mm. Find young's modulus, specific modulus, ultimate tensile stress, breaking stress, true stress at fracture, limit of proportionality, percentage elongation, percentage reduction in area. The relative density of the steel is 7.8. Draw the straight line graph. Answer: breaking stress,true stress at fracture and limit of proportionality.
Select All the correct statements from below. a. If the averaged distance between partial dislocations for material A observed under TEM is smaller than material B, the estimated stacking fault energy of material A is lower than material B. b. K_IC is a material property that doesn't change with testing conditions c. The main difference between high cycle fatigue and low cycle fatigue is the difference in the number of cycles to failure d. A negative R value in fatigue test indicate the minimum stress is compressive in nature
For the following inspection opening, calculate the correct values for A, A1, A2, A3, A4, A5 The design pressure is 900 kPa.g and the design strengths for the metals of shell and branch are 133MPa A= a. 3545.24 b. 3354.63 c. 3454.36 d. 3445.42 A1= a. 1377.45 b. 1673.71 c. 1773.82 d. 1534.53 A2= a. 721.63 b. 733.32 c. 718.59 d. 738.93 A3 = a. 600 b. 500 c. 450 d. 550 A4 = a. 211 b. 214 c. 220 d. 216 A5= a. 346 b. 356 C. 366 d. 336
What are some of the important principles of statics and show how they are used to determine the internal resultant loadings in a body?
A silicon carbide rotor fractures at a stress level of 100 MPa. This material has a fracture toughness of 4 MPa(m)1/2. Estimate the external flaw size responsible for this behavior with a geometric factor of f = 1.12. Report your size in mm from the options below. 0.4 mm 0.406 mm 10 mm 1 mm
Experience in non-destructive testing of 7075-T651 aluminum (Sy = 72 ksi, KIC = 22 ksi in1/2) pressurized pipes dictates that the minimum detectable longitudinal crack length is 10 mm. Thus, a longitudinal crack of length 10 mm could escape detection and be present at any time. The pipes transmit a flow of natural gas and the presence of a crack would not alter the internal pressure. What maximum internal pressure would you recommend? Neglect the pipe curvaturewhen determining the stress intensity factor.
An automotive V6 engine consists of six identical cylinders for the engine to perform its intended functions. All the six cylinders must be operationally successful and the mileage to failure of a cylinder can be modeled with the Weibull distribution with shape parameter 1.5 and characteristic life 3.5x106 miles.Calculate:(a)The reliability, R (t) of the engine. (b) The failure rate, h (t) of the engine. (c) With your expertise as a quality reliability engineer, how would you achieve a product life cycle in typical manufacturing industry?
You are called as an expert witness to analyze the fracture of a sintered silicon carbide plate that was fractured in bending when a blunt load was applied to the plate center. Measurement of the distance between the fracture origin and the mirror/mist boundary on the fracture surface gives a radius of 0.796 mm. You are given three pieces of the same SiC to test, and you determine that the mirror radius is 0.603, 0.203, and 0.162 mm for bending failure stress levels of 225, 368, and 442 MPa, respectively. What is your estimate of the stress present at the time of fracture for the original plate?
Carbonitriding is a case-hardening process in which a steel is heated in a gaseous atmosphere of such composition that carbon and nitrogen are absorbed simultaneously. Carbonitriding is a modification of the nitriding process. True False Based upon the percent elongation of a tensile sample, a ductile engineering material is defined by a value equal to or greater than 5% and a brittle material is defined by a value less than 5%. True False