Hot isostatic pressing is to be used to produce the femoral head components of hip implants made from a novel grade of zirconia. A series of manufacturing trials have demonstrated that the processing route results in post-sintered surface features 43-107 µm (mean 74 µm) in size. In clinical use it is anticipated that the femoral heads will be loaded to maximum stress level of 50% of its tensile strength once implanted. What is the critical flaw size when in service and will the implant require polishing for it to withstand loading during clinical use? Where: • You may assume a value of 1.4 for Y • The grade of zirconia has a Tensile strength of 980 MPa and a fracture toughness of 11 MPa.m0.5

Hot isostatic pressing is to be used to produce the femoral head components of hip implants made from a novel grade of zirconia. A series of manufacturing trials have demonstrated that the processing route results in post-sintered surface features 43-107 µm (mean 74 µm) in size. In clinical use it is anticipated that the femoral heads will be loaded to maximum stress level of 50% of its tensile strength once implanted. What is the critical flaw size when in service and will the implant require polishing for it to withstand loading during clinical use? Where: • You may assume a value of 1.4 for Y • The grade of zirconia has a Tensile strength of 980 MPa and a fracture toughness of 11 MPa.m0.5

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

Can you detailed summarize the benefits and the best application of PCD Diamond
How does the use of additive manufacturing (3D printing) revolutionize the design and production of complex mechanical components, and what are the potential applications and challenges in implementing this technology across industries?
Describe the role of finite element analysis (FEA) in the prototyping of mechanical components. How does it help in optimizing product designs for performance and reliability?
Hot isostatic pressing is to be used to produce the femoral head components of hip implants made from a novel grade of zirconia. A series of manufacturing trials have demonstrated that the processing route results in post-sintered surface features 43- 107 μm (mean 74 µm) in size. In clinical use it is anticipated that the femoral heads will be loaded to maximum stress level of 50% of its tensile strength once implanted. What is the critical flaw size when in service and will the implant require polishing for it to withstand loading during clinical use? Where: . You may assume a value of 1.4 for Y The grade of zirconia has a Tensile strength of 980 MPa and a fracture toughness of 11 MPa.m 0.5 ● Select one or more: a. 81.8 μm b. Yes c. 20.5 μm Od. No e. Of. 163.6 μm 40.9 μη
What is the definition of post treatment in 3D printing of plastics?
You are working as a quality control engineer in a glass manufacturing company. What characterization technique would you use for routine and quick analysis to decide whether any impurities from the glass melting furnaces are introduced to your glass products? Explain your reasoning
(a) Community-wide mask wearing may contribute to the control of Covid-19 by reducing the amount of emission of infected saliva and respiratory droplets from persons with subclinical or mild Covid-19. However, of concern is the manner in which they are disposed of and becoming a threat to the environment. Depending on the material, these masks could last years, even decades, in the environment due to the fact that they are not biodegradable. As a khalifah, you decided to design the facemask that can minimise the pollution. In order to do that, you have to: (i) Determine the properties of materials required to suit the purpose in Q1 (a).
Estimate the critical stress of the surface flaw in a ceramic whose Young's modulus and surface energy are 70 GPa and 0.24 erg/m2, respectively. Assume the propagation of a surface crack of length 0.03 mm.
Sintering of ceramics may exhibit the following characteristics: Select one or more: a. It involves the high-pressure deformation of a pre-existing shape into a new form b. The total surface area (including internal area) decreases C. Pores become smaller d. Pores become larger on average Parts of the material may become amorphous Of. The surface energy of the system increases e.
For the 21.5-cm thick multilayer assembly as listed below, please estimate the temperature on the interface between material layers 3 and 4 Material layers - counted from the interior side: (1) 1.5 - cm gypsum board; (2) 4.0-cm - concrete of density - 2400-kg/m3; (3) 10-cm of XPS foam; (4) 6.0-cm - concrete of density - 2400-kg/m3 Interior film resistance is Ri = 0.121 m2K/W Exterior film resistance is Re - 0.029 m2K/W Internal temperature +20 degC External Temperature - 20 degC All necessary material properties can be found in the ASHRAE Handbook of Fundamentals, or other sources