ECON 2000 Chapter : EC2000 Chap6
Document Summary
Design stress - product of the calculated stress level (on the basis of estimated maximum load) and a design factor (which has a value greater than unity). Ductility - a measure of a material"s ability to undergo appreciable plastic deformation before fracture; it may be expressed as percent elongation (%el) or percent reduction in area (%ra) from a tensile test. Elastic deformation - deformation that is nonpermanent that is, totally recovered upon release of an applied stress. Elastic recovery - nonpermanent deformation recovered or regained upon release of a mechanical stress. Engineering strain - a steel alloy that is highly resistant to corrosion in a variety of environments. The predominant alloying element is chromium, which must be present in a concentration of at least 11 wt%; other alloy additions, to include nickel and molybdenum, are also possible. Engineering stress - the instantaneous load applied to a specimen divided by its cross-sectional area before any deformation.
