Stress Riser : A disturbance in the metal structure caused by impact or a wrench mark or penetration of slips that is a likely location for increased corrosion or some failures such as hardening or local fatigue
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}