当前位置: 压力容器 >> 压力容器发展 >> 压力容器常见失效模式3大类14种
第一大类:短期作废形式(Shorttermfailuremodes):
1)脆性断裂(Brittlefracture)
2)韧性断裂(Ductilerupture)
3)超质变形引发的讨论透露(Leakageatjointsduetoexcessivedeformations)
4)超量个别应变引发的裂纹构成或韧性扯破(Crackformationorductiletearingdue
toexcessivelocalstrains)
5)弹性、塑性或弹塑性失稳(垮塌)(Instability-elastic,plasticorelastic-plastic)
第二大类:恒久作废形式(Longtermfailuremodes)
6)蠕变断裂(CreepRupture)
7)蝴变一在板滞联接处的超质变形或致使不答应的载荷通报(Creep-excessivedeformationsatmechanicaljointsorresultinginunacccptabletransferofload)
8)蠕变失稳(Creepinstability)
9)冲蚀、腐化(Erosion,corrosion)
10)处境滋长开裂如:应力腐化开裂、氢致开裂(Environmentallyassistedcrackinge.g.stresscorrosioncracking,hydrogeninducedcracking,etc)
第三大类:轮回作废形式(Cyclicfailuremodes):
11)平添性塑性变形Progressiveplasticdeformation
12)瓜代塑性Alternatingplasticity
13)弹性应变疲钝(中周和高周疲钝)或弹一塑性应变疲钝(低周疲钝)Fatigueunderelasticstrains(mediumandhighcyclefatigue)orunderelastic-plasticstrains(lowcyclefatigue)
14)处境滋长疲钝Environmentallyassistedfatigue
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