Question

Which test is used to measure a coating’s resistance to abrasions?

(a) Coating and paint testing

(b) Gravelometer testing

(c) Emission bench testing

(d) Mechanical testing

This question was posed to me in quiz.

My question is taken from Testing of Automobile Engine in chapter Engine Performance & Testing of Automobile Engine of Automotive Engine Design

Answer 1

Correct choice is (b) Gravelometer testing

To explain I would say: Gravelometer testing is another means of measuring a coating’s resistance to abrasions. In a gravelometer test, the samples have 300 pieces of gravel heaved at them by the machine’s air pressure.