Q1/ Air craft component is fabricated from epoxy composites that have plane strain fracture toughness of (20 MPa m2). It has been determined that fracture results at a stress of (250 MPa) when the maximum (or critical) internal crack length is (3 mm). For the same component and part, will fracture occur at a stress level of (350 MPa) when the maximum internal crack length is (2 mm)? yes or not depending on your solution?

Q1/ Air craft component is fabricated from epoxy composites that have plane strain fracture toughness of (20 MPa m2). It has been determined that fracture results at a stress of (250 MPa) when the maximum (or critical) internal crack length is (3 mm). For the same component and part, will fracture occur at a stress level of (350 MPa) when the maximum internal crack length is (2 mm)? yes or not depending on your solution?

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

Related questions

Q: When a viscoelastic material is loaded and unloaded, the unloading curve is different to the loading…

A: The stress-strain curve of a viscoelastic material exhibits hysteresis, with the area of the loop…

Q: Give an approximate value for the tensile strength of a Boron/Aluminum composite with Vf = 0.4.…

A: The matrix is aluminum and fibers are of boron. The volume fraction of fiber is Vf=0.4. The elastic…

Q: An Al2O3 specimen is being pulled in tension. The specimen contains flaws having a size of 100 µm.…

Q: Describe what you see in the fracture surfaces of these two HSLA bolts shown in image 2a and 2b.…

A: The given figure depicts the fracture of 2 High strength Low alloy steel. There are several reasons…

Q: When choosing a polymer for fatigue crack propagation resistance, would you typically select an…

A: Semi molecular polymers have more endurance limit in crack propagation. One explanation is the…

Q: A tie rod made of quenched and tempered 4340 steel is used as a critical linkage in an industrial…

A: Given data as per question for the given 4340 steel Tensile stress =550 MpaCompressive stress…

Q: A ceramic with KIc = 4 MPa m1/2 contains pores with radius a = 5 µm due to incomplete sintering.…

Q: Q1: Choose the correct answer for the following questions: 6_fracture stress (a) is proportional to…

A: CHOOSE THE CORRECT ANSWERS :- 6)Fracture stress is proportional to :......................7)Rapture…

Q: An aircraft component is fabricated from an aluminium alloy, which has a plane strain fracture…

A: Given:Plane strain fracture toughness= 50 MPam12Fracture stress(σ)=350 MPaLength of initial…

Q: A material has a yield strength of 1150Mpa and a fracture toughness of 47 Mpa m^1/2. If the applied…

A: Data Given : We need to find the internal crack that can lead to failure.

Q: Will fracture occur for a material exposed to a tensile stress of 900 MPa if the material has a…

Q: Problem 1.5 A component of a composite rocket motor case is subject to a state of stress o₂ = 10…

A: To find: The optimum fiber orientation. Given: The state of stress is σx=10 MPa, σy=5 MPa and…

Q: A structural component in the shape of a flat plate 24.2 mm thick is to be fabricated from a metal…

A: Given data :- Thickness of plat = 24.2 mm Yield strength = 537 Mpa Fracture toughness = 28.2 Mpa√m…

Q: Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs…

Q: A fracture surface of a metal matrix composite (nickel with silicon carbide fibres) is investigated…

A: When light is used we can not see anything smaller than the wavelength of light and therefore…

Q: V. The following picture shows Charpy fracture surfaces of a material with different initial…

A: Given: The images of the test sample of the Charpy V-notch test at different temperatures. There…

Q: The sketch below shows a material with a crack of length 2a, and a nominal stress of so. You are…

A: Given Data:To Find:

Q: In designing a ceramic part for a jet engine, to ensure that the part does not fail, we plan to…

A: Write the equation of strain fracture touhhness of the ceramic partKk=fσπaKkfσ=πasquaring both…

Q: A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 55…

Q: A tie rod made of quenched and tempered 4340 steel is used as a critical linkage in an industrial…

A: Given :- Type of steel : 4340 steel Tensile strength : 550 Mpa a : 3.5 mm

Q: An Al2O3 part contains both internal cracks with a maximum length of 0.075 mm, and external cracks…

Q: On what does a tensile fracture generally depend?

Q: A tension test was conducted for a cylindrical specimen of stain-less steel having an initial…

Concept explainers

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

Q1/ Air craft component is fabricated from epoxy composites that have plane
strain fracture toughness of (20 MPa m2). It has been determined that fracture
results at a stress of (250 MPa) when the maximum (or critical) internal crack
length is (3 mm). For the same component and part, will fracture occur at a
stress level of (350 MPa) when the maximum internal crack length is (2 mm)?
yes or not depending on your solution?
Q2/ Polymer (y) has possion ratio (0.33) it faced shearing forces leading to
change the shape of the polymer (y) sample. Where the dimensions of sample
are (h = 0.8 cm, x = 1 cm) and (Ax = 0.4 cm) and the shear force is 0.25 KN.
Calculate the elastic modulus and the bulk modulus?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Guidelines:

Basic:

Calculation:

Conclusion:

Step by step

Solved in 4 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Types of Properties of Engineering Materials

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Required information A shaft is loaded in bending and torsion such that Ma= 66 Nm, Ta=42.496 N.m, Mm = 51.858 N.m, and Tm = 33 N-m. For the shaft, Su = 700 MPa and Sy=560 MPa, the true fracture strength is 1045 MPa, and a fully corrected endurance limit of Se = 210 MPa is assumed. Let Kf= 2.2 and Kfs=1.8. With a design factor of 2.0, determine the minimum acceptable diameter of the shaft using the methods mentioned in the subsection. Determine the minimum acceptable diameter of the shaft using the DE-Morrow criterion. The diameter of the shaft is 27.16 mm.
The overall fracture strength of glass may be increased by etching away a thin surface layer. It is thought that the etching can alter the surface crack geometry. Calculate the ratio of the etched and original crack tip radii if the fracture strength increases by a factor of 8 when 48 percent of the crack length is removed.
Using the equation Kica, plot the fracture stress (MPa) for aluminum alloy 7075-T651 versus surface crack size a (mm) for a values from 0.2 mm to 2.0 mm. What is the minimum size surface crack that will cause catastrophic failure?
Suppose that a wing component on an aircraft is fabri- cated from an aluminum alloy that has a plane-strain fracture toughness of 26.0 MPa Vm (23.7 ksi Vin.). It has been determined that fracture results at a stress of 112 MPa (16,240 psi) when the maximum internal crack length is 8.6 mm (0.34 in.). For this same component and alloy, compute the stress level at which fracture will occur for a critical internal crack length of 6.0 mm (0.24 in.).
1. Glass and epoxy have stiffnesses of Eglass = 70 GPa and Eepoxy = 3.5 GPa and fracture toughness values of Kic-glass = KIC-epoxy = 1 MPa√m. a. Which has a higher toughness (GC)? b. What might the broken surfaces look like after failure, and how does that relate to the energy dissipated during fracture?