What is meant by the idea of testing individual units?

what is the Rockwell hardness test

Question 2 1. What is a First Article Inspection and why it is needed? Explain briefly (with the help of the following drawing)the steps that you take to prepare FAI in terms of design, manufacturing, and inspection of any part First Article Inspection Requirements RAW MATERIAL DRAWINGS, STANDARDS, SPEC SHEETS SPECIAL PROCESSING REQUIREMENTS TEST SPECIFICATIONS PROCEDURES SPECIAL PROCESSES (ANODIZATION, CLEANING ETC,). RAW CONVERSION FUNCTIONAL MATERIALS PROCESSES (MACHINING, CASTING ETC.) TESTING (AL6061 T6, 301SST etc.) CERTIFICATE OF CONFORMANCE TEST CERTIFICATE OF CONFORMANCE DIMENSIONAL MEASUREMENTS RESULTS MANUFACTURING ENGINEERING

Why might a 50 division vernier caliper not be more advantageous, in terms of measurement accuracy, than a 10 division vernier caliper?

What are two differences between clamshell/beach markings and fatigue striations?

At operating stress of 420MPa, the number of cycles to fail a specimen is 65 cycles. At operating stress of 360MPa, the number of cycles to fail the specimen is 390 cycles, and at operating stress of 130MPa, the number of cycles to fail the specimen is 11,900 cycles. A test sequence as follows is designed: first, operating stress of 420MPa for 7 cycles, second, operating stress of 360MPa for 65 cycles, and third, operating stress of 130MPa for 325 cycles. Determine at what number of cycle and which operating stress level the specimen would be expected to fail if the above sequence is repeated.

What are three commonly used test to measure the hardness related properties of materials?