Elastic constants of a composite material were obtained after testing of its sheet. It was determined that E1=E2 = 16 and ¹21 = 0:32. The result was shown to a specialist who categorically said that...

Elastic constants of a composite material were obtained after testing of its sheet. It was determined that E1=E2 = 16 and ¹21 = 0:32. The result was shown to a specialist who categorically said that there had to be a mistake. What was his con…dence based on?