1 2 READ 3 read VIDEO - Using PASCO's Material Testing System (ME-8230), a brass sample is stretched while Force vs. Position is plotted in sync with the webcam video. After breaking, the data is rewound and played slowly so you can see the sample break in slow motion. Force ditto is directly proportional sa length Or enlongation, or sometimes ung variable na kinocompare nila is delat L or change in length 4 READ – 5 READ 5 Tensile Strength. Yield Strength is the stress a material can withstand without permanent deformation or a point at which it will no longer return to its original dimensions 5 The ultimate tensile strength (UTS), or simply, ultimate strength, is defined as the maximum stress that a material can withstand before failure 5 Elongation at break is the percentage increase in length that a material will achieve before breaking. This figure is shown as a percentage and is usually measured using test method ASTM D412. Scientists, engineers, architects, and government agencies rely on ASTM safety standards to ensure the quality and consistency of materials. While these standards are voluntary, they are mandatory when authorities need to cite them in contracts, government codes, regulations, or laws A higher percentage usually indicates a better quality material when combined with a good Tensile Strength 5 MODULUS OF ELASTICITY the stiffness of a material. In other words, it is how easily it is bended or stretched. when graphed, the resulting plot will look something similar to this: com·pres·sive strength /kəmˈpresiv streNG(k)TH,strenTH/ 1. the resistance of a material to breaking under compression. 7The Kaiser effect is an AE phenomenon briefly defined as the absence of detectable acoustic emissions until the previously applied stress level is exceeded. This effect is based on the experimental discovery by Kaiser (1950), that metal materials had the capability to remember the previous maximum stress level. 10The curves show that while the tensile load is increased linearly, AE activ- ity inareases at an even "exponential” rate which reflects the pattern ’as fi- bres break leaving fewer intact fibres to support an ever increasing load.The pressure law states that for a constant volume of gas in a sealed containerthe temperature of the gas is directly proportional to its pressure. Provided that the volume does not change 119,10.4 , pressure vessels welded yang mga yan, hindi naman kasi finafabricate yan as a whole. So by parts , weld by parts. Hanggang mabuo mo sya as a whole 12 The Kaiser effect is an AE phenomenon briefly defined as the absence of detectable acoustic emissions until the previously applied stress level is exceeded. Sa machine design sa part ng breaking ng mga materials eh ung key ways or key slot na tinatawag sa shafting, dooon concentrated . T he stress concentration phenomena in key seats are controlled and determined by the fillet radius of the key seat corners. The bigger fillet radius will results in the smaller stress concentration factor in the key seat. Same din sa STRESS = F/aStress direct prop sa force and invers prop sa area, lakihan mo area liliit ung stress
