14 What is Roughness? Answer the question relating it to the ABNT NBR 8004 standard (based on ISO 1302)
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14 What is Roughness?
Answer the question relating it to the ABNT NBR 8004 standard (based on ISO 1302)
Step by step
Solved in 2 steps with 3 images
- Calculation of Limits using ANSI B4.1 Standard Tables, when one of the design Features Exists. When calculating the limit tolerances for features that mate with purchased parts, the purchased part size must be known. This may be obtained be requesting a drawing from a vendor or, a caliper or micrometer can be used to obtain an accurate size. A shaft diameter of 1.2500" is to be pressed into a part using a FN3 interference (force) fit. Limits of size for the shaft diameter are 1.2500" and 1.2495". Determine the Limits of the hole diameter. Show all work.How’s ASTM D2041 related to ASTM D2726 ??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.).
- Please give the right solution other wise skip to another expert. Calculate the fundamental deviation and tolerances and hence the limits of size for the shaft and hole for the following fit: 60 mm H8-f7. The diameter steps are 50 mm and 80 mm.(USCS units) A GO/NO-GO plug gage is needed to inspect a 1.000 ± 0.020 in diameter hole. A wear allowance is applied to the GO side of the gage. The allowance = 2% of the total tolerance band. Determine the nominal sizes of (a) the GO gage and (b) the NO-GO gage.Which three of the following are names given to the three regions in the typical wear growth curve: (Choose three answers) temperature region diffusion region failure region 0000000 accelerated wear region break-in period steady-state wear abrasion region
- What is notch sensitivity?Q1) The redesigned brake caliper is manufactured using SLM from Titanium Ti6Al-4V alloy powder. How many SLM machines are required to manufacture parts for 450 vehicleswhich are to be built in a 20-month production period. The following parameters are in effect:• A single caliper is built at a time• The caliper has a height of 173mm.• Each layer is 32 µm thick• Only one laser is used• The average laser scanning time for each layer with a single laser is 63 seconds• The powder recoating time for every odd numbered layer is 12 seconds and 25 for every evennumbered layer• Every 8th layer is scanned twice, at 2.3 times the usual laser scan speed to provide additional heatinput for in-situ heat treatment• The SLM machine operates at a duty rate of 42% of the 24-hour day, Monday to Friday, for 48 weeksof the year, with 10% of production time lost to unscheduled downtime.What is abrasion resistance testing?
- A GO/NO-GO snap gage is required to inspect the diameter of a shaft that is 1.000 ± 0.020. A wear allowance of 2% of the entire tolerance band is applied to the GO side. Determine (a) the nominal sizes of (a) the GO gage and (b) the NO-GO gageWhat precisely is stress testing, and why is it advantageous to begin with?111 What is Roughness? Answer the question by relating it to Tribology
