A Handbook of Testing: Materials (Classic Reprint) by C. A. M. SmithA Handbook of Testing: Materials (Classic Reprint) by C. A. M. Smith

A Handbook of Testing: Materials (Classic Reprint)

byC. A. M. Smith

Paperback | December 14, 2018

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Excerpt from A Handbook of Testing: Materials

The properties of materials used by engineers vary owing to many causes. If we take a pound of almost any gas and measure its temperature, pressure, and volume, we can estimate with accuracy the behaviour of the gas, if it is to be compressed, under certain conditions, to a new pressure and volume. If, however, we take a pound of steel we cannot forecast with any accuracy the behaviour of the material under load if we know nothing more about it than the fact that it is called steel. It is of some assistance if we know the chemical. Composition of the steel, but, even with such information, we cannot estimate with accuracy the load which the material will carry at the point of fracture.

Experience has taught engineers that the only satisfactory method of estimating suitable loads in design works is to subject samples of the actual material to be used, to tests, which reproduce, as nearly as is possible, the conditions met with in actual practice. Thus, if a quantity of steel is made for a purpose in which the material is subjected to a direct pull, the most satisfactory way of deciding the maximum value of the pull to be allowed in practice is to test samples of the material under similar conditions, and obtain a record of the physical properties of these samples. Of course it is possible that all of the steel from which the samples have been selected will not behave in a similar fashion to the specimens tested. In general, however, we can obtain suffi cient data to assist us to estimate with considerable certainty the safe loads to which the materials may be subjected.

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Title:A Handbook of Testing: Materials (Classic Reprint)Format:PaperbackDimensions:318 pages, 9 × 6 × 0.67 inPublished:December 14, 2018Publisher:FB&C LtdLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:1330596749

ISBN - 13:9781330596746