-
公开(公告)号：US4582991A
公开(公告)日：1986-04-15
申请号：US476952
申请日：1983-03-21
摘要： A method of measuring the density of a first material containing a moderator of fast neutrons comprising the steps of: emitting fast neutrons into a sample having a predetermined volume confined in a predetermined shape and sensing the rate of slow neutrons emerging from the sample for each of a plurality of samples of a second material, each of the plurality of samples of the second material having a different known density and neutron moderating and absorbing characteristics that are substantially the same as the neutron moderating and absorbing characteristics of the first material; emitting fast neutrons into a sample of the first material having a predetermined volume confined in a predetermined shape; sensing the rate of slow neutrons emerging from the sample of first material; and comparing the rate sensed in the sensing of the sample of the first material with the rates sensed in the sensing of the plurality of samples of the second material to determine the density of the first material.
摘要翻译： 一种测量包含快中子慢化剂的第一材料的密度的方法，包括以下步骤：将具有预定体积的快中子发射到具有预定形状的样品中，并检测每个样品中出现的慢中子速率 多个第二材料的样品，第二材料的多个样品中的每一个具有与第一材料的中子调节和吸收特性基本相同的已知密度和中子调节和吸收特性; 将快中子发射到具有限定在预定形状的预定体积的第一材料的样品中; 感测从第一种材料样品中出现的慢中子的速率; 以及将在第一材料的样品的感测中感测到的速率与在感测第二材料的多个样品中感测到的速率进行比较，以确定第一材料的密度。
-
公开(公告)号：US4792232A
公开(公告)日：1988-12-20
申请号：US50435
申请日：1987-05-18
申请人： John D. Jobe , Allen E. Lepley
发明人： John D. Jobe , Allen E. Lepley
CPC分类号： G06T7/0057 , G01B11/25
摘要： A method and apparatus for the detection of undesirable surface deformities is disclosed wherein a known (linear) light pattern is reflected off a fabricated part having a nominally smooth surface, the reflected light pattern subsequently being analyzed for distortions from the expected light pattern. The extent of the detected distortions may be quantified by the use of a computer having appropriate software, in order to identify and quantify unacceptable surface deformities.
摘要翻译： 公开了一种用于检测不期望的表面变形的方法和装置，其中已知（线性）光图案从具有标称平滑表面的制造部件反射，随后对反射光图案进行分析以从预期光图案失真。 可以通过使用具有适当软件的计算机量化检测到的失真的程度，以便识别和量化不可接受的表面畸形。
-
搜索结果
2 条记录 (耗时 0.02 秒)
