【英文标准名称】:Graphicalandlettersymbolsforhydrogeology
【原文标准名称】:水文地质学用图形和符号
【标准号】:DIN19711-1975
【标准状态】:现行
【国别】:德国
【发布日期】:1975-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:粒度;地表水;粘土;储存;水;地质学;岩石;砂岩;图形符号;砾石;砂;石;白云石;地下水;水文地质学;水文学;泥灰石;石英岩;硬石膏;喷泉;石灰岩;泉;煤;泥炭;熟石膏
【英文主题词】:Anhydrite;Clay;Coal;Dolomite;Fountains;Geology;Grainsize;Graphicsymbols;Gravel;Groundwater;Hydrogeology;Hydrology;Limestone;Marl;Peat;PlasterofParis;Quartzite;Rocks;Sand;Sandstone;Springs(water)
【摘要】:Graphicalandlettersymbolsforhydrogeology
【中国标准分类号】:A45;P10
【国际标准分类号】:07_060
【页数】:16P;A4
【正文语种】:德语


Product Code:SAE J443
Title:Procedures for Using Standard Shot Peening Test Strip
Issuing Committee:Surface Enhancement Committee
Scope:This SAE Recommended Practice provides uniform procedures for using the standard shot peening test strips reported in SAE Standard J442, Test Strip, Holder and Gage for Shot Peening. Standard test strips are used to control repeatability of the shot peening machine operations, and to specify a desired result on a part. It is recommended that the standard test strip A be used for intensities below 6A, the standard N strip is recommended, and for intensities above 2A, the standard C strip is recommended.Shot peening is intended to induce surface compressive stresses in metal parts for the purpose of improving resistance to fatigue and stress corrosion cracking. Springs, axles, and aircraft landing gears are typical examples of such parts. To have the desired effect, shot peening requires that specified intensity and coverage be achieved on critical areas, where the high tension stresses or stress ranges are most likely to cause fatigue or stress corrosion failures in service. Actual experience with service failures or fatigue tests may sometimes be required to discover or confirm the location of areas subject to critical stressing, as a result of service, design, and/or manufacturing conditions.