Defining weld porosity

摘要

A young entrepreneur invests his savings in a new trash-hauling business. He buys a new garbage truck and decks it out with his name, number, and a fancy new logo. He cleans it up for an afternoon photo shoot, and while reviewing the pictures he notices a rusty stream making its way down the side of the fancy new logo. Upon further investigation, he finds the moisture is seeping from a single pore of porosity found in a fillet weld. That's something no one wants to see.