Analysis of Critical Flaws on the Surfaces of Window Glass Using a Scanning Electron Microscope
Analysis of Critical Flaws on the Surfaces of Window Glass Using a Scanning Electron Microscope
批准号:
8615382
负责人:
H. Scott Norville
金额:
$3.0万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1986
资助国家:
美国
项目状态:
已结题
起止时间:
1986-09-01 至 1988-02-29
中文摘要
1980年至1985年进行的破坏性试验中的破碎反射镜 被保存;这个集合是独一无二的,因为它起源于 窗户玻璃板和镜面上自然产生的瑕疵。 选定的标本将使用扫描电子显微镜进行分析。 显微镜来确定,除其他观察外:一般形状 自然发生的临界流;形状和 新窗和风化窗表面缺陷的大小 玻璃板;两种类型的临界流量之间的差异 在均匀载荷下进行全尺寸试验时, 使用同心环测试;以及 不同流动方向/应力方向的失效和缺陷尺寸 关系。
英文摘要
Fractured mirrors from destructive tests performed from 1980 to 1985 were saved; this collection is unique in that it originated from naturally occurring flaws on window glass plate and mirror surfaces. Selected specimens will be analyzed using a scanning electron microscope to determine, among other observations: the general shapes of naturally occuring critical flows; differences between shapes and sizes of flaws occurring on the surfaces of new and weathered window glass plates; the differences between the critical flows for both types of specimens when tested in full scale under uniform loading, and when using the concentric rings tests; and the correlation between stress at failure and flaw size at various flow direction/stress direction relationships.
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Research Initiation: Probabilistic Behavior of Elasto- Plastic Columns Due to Horizontal-Vertical Earthquake Loads
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批准号:8205317
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项目类别:Standard Grant
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资助金额:$4.67万
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财政年份:1982
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负责人:H. Scott Norville
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依托单位:
海外基金