A reciprocating type ball-on-disc tribometer was used to measure the tribological behaviour of the thermally sprayed cobalt oxide coatings against the alumina (Ø 6.35 mm) counterface. After wear testing at high temperatures, the area of the wear tracks was 300 μm² measured by a white light microscope. The following parameters were used for sliding wear testing. Parameters Applied load (N) Sliding velocity (cm/s) Test frequency (Hz) Track length (mm) Total sliding cycles Total sliding distance (m) Values 10 3.14 1 10 2500 50 Determine the wear volume in mm³ that was removed during the sliding process and the specific wear rate (mm³/N.m.).

A reciprocating type ball-on-disc tribometer was used to measure the tribological behaviour of the thermally sprayed cobalt oxide coatings against the alumina (Ø 6.35 mm) counterface. After wear testing at high temperatures, the area of the wear tracks was 300 μm² measured by a white light microscope. The following parameters were used for sliding wear testing. Parameters Applied load (N) Sliding velocity (cm/s) Test frequency (Hz) Track length (mm) Total sliding cycles Total sliding distance (m) Values 10 3.14 1 10 2500 50 Determine the wear volume in mm³ that was removed during the sliding process and the specific wear rate (mm³/N.m.).

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

Sine bar is employed for the precise angle measurement along with slip gauge and dial test indicator in a workshop. At the end of the measuring process, the angle of the specimen found to be 390 for the slip gauge setting ( h ) of 46.12 mm for zero deflection of dial test indicator. Find the length of the sine bar using the above-mentioned data.(b) Using the following observation and find the actual size of the specimen in mm. LC=0.02 mm.
What is the tolerance zone (and Material Boundary) for a non-cylindrical feature such as a slot or groove?
QUESTION 8 The creep rate (in sec-1) for the 40N loaded polyethylene at 45C is: (enter in decimals, up to six decimal points) Use initial gauge length as 30 mm Select 800 - 1200 s time period.
The following curve is a result of a tensile test. The gauge length was 2 in, and the specimen diameter was 0.505 in The fracture area was round with a diameter of 0.391 in. Remember to com 20000 Force (pounds force) 15000 10000 5000 0 16. The yield strength is 0 0.2% O 80,000 pl O 12.000 p 060,000 pl 85,000 p 0.1 0.2 Extension (inch) 0.3 0.4
The results of a tensile test are: Diameter of the specimen Gauge length Load at limit of Proportionality Extension at the limit of Proportionality Maximum Load : 10mm :40 mm : 70kN :0.08mm. :100 kN Calculate stress at limit of proportionality and young's modulus.
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 what purpose is A uniaxial tensile test performed?
Question 8. The following figure represents three hardness-testing techniques of materials. Describe their specifications, how there are conducted and their potential applications? 8 - Shape of Indentation Test Indenter Side View Top View Load Brinell 10-mm sphere P of steel or tungsten carbide Vickers Diamond 136° microhardness ругamid Rockwell and 60 kg) 100 kg } Rockwell 150 kg) Diamond 120° superficial cone: s - in.- diameter Rockwell 15 kg 30 kg } Superficial Rockwell 45 kg) steel spheres
1. On the drawing attached, before any geometric controls are applied, what is the coaxility tolerance that is implied between the diameters?
What is self-heating in strain gauges? Why is it caused and what are its implications on end result?
3 l Two tensile samples were cut from a titanium ingot that was cooled very slowly, and under specific conditions so that the ingot was a single crystal. The samples were then put in a tensile tester to determine their 0.2% offset σys. The σys for the two samples resulted in one sample having a value that was twice of the other. What could the cause be?
Manufacturing and measurement - 1. A single electrical resistance strain gauge of resistance 100 ohm and having a gauge factor of 2.5 is bonded to a metal having an elastic limit stress of 300 kN/m² and modulus of elasticity of 250 GN/m2 Calculate the change in resistance due to a change in stress equal to 1/20 of the elastic range of metal