Toughness Tests
Tests can be done by using a pendulum and basic physics to measure how much energy it will hold when released from a particular height. By having a sample at the bottom of its swing, a measure of toughness can be found, as in the Charpy and Izod impact tests.
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Famous quotes containing the words toughness and/or tests:
“Indeed, there are no easy correlations between parental ideology, class or race and “successful” child development. Many children the world over have revealed a kind of toughness and plasticity that make the determined efforts of some parents to spare their children the slightest pain seem ironic.”
—Robert Coles (20th century)
“Although she feeds me bread of bitterness,
And sinks into my throat her tiger’s tooth,
Stealing my breath of life, I will confess
I love this cultured hell that tests my youth!”
—Claude McKay (1889–1948)