Better Peening Shouldn't Be a Shot in the Dark--Robust design yields machines at a user-friendly price

摘要

Almost any pilot, will toll you that when it comes to airplane; parts like wings or engine blades, failure is unacceptable. That's wiry more aerospace companies have sought to reduce the possibility of metal fatigue in such critical parts, and why some manufacturers of those pieces use a technique called shot peening, in which a hail of 0.014-in. steel balls create microscopic, dents in surfaces of metal parts to strengthen the material and extending its lifetime.