摘要:
Apparatus and method for testing surface defect on an object are disclosed, which comprise an illumination means for illuminating collimated lights onto a surface of the object obliquely to the surface and from two symmetrical directions, a sensor composed of a TV camera or a linear image sensor for sensing diffused reflected lights from the surface of the object in the direction perpendicular to the surface, a classification means for discriminating the sensed image signal by a threshold level which is higher than an average level of the image signal and a threshold level which is lower than the average level to determine the surface defect pattern as a broken cavity pattern or a pit or crack pattern by the discriminated signals, and a discrimination means for calculating L.sup.2 -4.pi.S, where S is an area of the defect and L is a length of the contour, when signal discriminated by the lower threshold level is produced to discriminate the pit pattern and the crack pattern by determining whether L.sup.2 -4.pi.S exceeds a predetermined value or not. In this manner, the defects that exist on the surface of the object can be classified and evaluated.
摘要翻译:公开了一种用于测试物体上的表面缺陷的装置和方法,该装置和方法包括用于将准直光照射到物体表面上的表面和两个对称方向的照明装置,由TV照相机或线性图像传感器 用于在垂直于表面的方向上感测来自物体表面的漫反射光;分类装置,用于将感测到的图像信号鉴别出高于图像信号的平均电平的阈值电平和较低的阈值电平 比通过鉴别信号确定表面缺陷图案为断裂图案或凹坑或裂纹图案的平均水平,以及用于计算L2-4 pi S的鉴别装置,其中S是缺陷的面积,L是 当产生由较低阈值电平鉴别的信号时,轮廓的长度可通过确定wh来区分凹坑图案和裂纹图案 醚L2-4 pi S超过预定值。 以这种方式,可以分类和评估存在于物体表面上的缺陷。
摘要:
A pattern defect detecting method and apparatus are disclosed on a connectivity processor to input a binary picture signal pattern and a pad position coordinate and outputting connectivity data between pads. Here, the connectivity processing refers to a processing for giving the identical number to one aggregation of connected or linked pads for the pads given to a serial pattern. In the connectivity processor wherein a plane on which the drawn pattern to be inspected is scanned by a linear sensor, the connectivity processing can be releazed almost concurrently with the scanning by driving a temporary memory.Also, a pattern defect detecting apparatus the above-mentioned connectivity. The invention processing coping with the difficulties of a required inspection level, and also represents a processing time of each embodiment theoretically. A moving time of the bed on which an inspecting object is placed and others are added to the real processing time.
摘要:
An object to be inspected which is jointed to a circuit board is vibrated in a contactless manner by applying a gas jet or a magnetic force to the object, a laser beam is irradiated on the object, and a laser beam reflected from the object is detected by a linear sensor to observe a laser speckle pattern for the object. Quality of a joint junction state of the object is judged from the laser speckle pattern.
摘要:
A biodegradable nonwoven fabric and molded vessel suitable to throwaway use such as in domestic, wrapping, agricultural, gardening, and civil engineering field. A web of cellulose-based fibers are combined with chitosan salt and an interfiber binder comprising a combination of chitosan salt and fine cellulose, or by combined use of the interfiber binder and physical combining techniques. They are naturally decomposed by microorganisms in the soil and can dissolve the polution problems.
摘要:
A flame-retardant olefinic resin composition comprising (1) 100 parts by weight of an ethylenic polymer resin mixture having an average density of 0.890 to 0.915 g/cm.sup.3, of (a) an ethylenic polymer consisting mainly of an ethylene-alpha-olefin copolymer and (b) a silane-grafted polymer obtained by grafting a silane to at least one component of said ethylenic polymer (a), and (2) 50 to 300 parts by weight of a hydrated metal compound.
摘要翻译:一种阻燃性烯烃树脂组合物,其包含(1)100重量份平均密度为0.890〜0.915g / cm 3的乙烯类聚合物树脂混合物,(a)主要由乙烯-α-烯烃共聚物 和(b)通过将硅烷接枝到所述乙烯类聚合物(a)的至少一种成分而得到的硅烷接枝聚合物,和(2)50〜300重量份的水合金属化合物。
摘要:
A method and an apparatus for detecting the position and posture of an object (5, 9, 10) are characterized by two planar light beams (3a, 3b) alternately projected on the object (5, 9, 10) to be handled and intersection lines (A, B) formed between the two planar light beams (3a, 3b) and the object (5, 9, 10) which are imaged by a single image pickup device (2) positioned between the two planar light beams (3a, 3b).A bright line occurring at a junction between an edge of the object and an intersection line is separated, extracted and transformed into an actual coordinate in a three dimensional coordinate system (x, y, z) by referring to corresponding relationships between the actual coordinate system (x, y, z) and a scanning coordinate system (i, j) so that the position and posture of the object (5, 9, 10) are detected in three dimensions.
摘要:
A vinyl chloride polymer composition consisting essentially of 60 to 40 % by weight of a vinyl chloride-propylene copolymer and 40 to 60 % by weight of at least one interpolymer selected from the group consisting of acrylonitrile-butadiene-styrene terpolymers and acrylonitrile-methyl methacrylate-butadiene-styrene quadripolymers. This composition has a heat deformation temperature of 75.degree. to 90.degree.C and is capable of easily giving by injection molding an article having a good surface appearance, a good gloss due to its excellent moldability and excellent impact resistance.
摘要:
Light having a wavelength equal to or less than the cut-off wavelength of a sharp-cut filter is cut off so that an output of a photo-sensitive device corresponds to a stray light component when a wavelength control device sets the wavelength equal to or less than the cut-off wavelength of the sharp-cut filter. By subtracting the stray light component from the output of the photo-sensitive device when the photo-sensitive device is to be measured an intensity of light having a predetermined wavelength, the stray light component can be removed from dispersion outputs of the spectroradiometer.
摘要:
A flame-retardant olefinic resin composition comprising(A) 100 parts by weight of a mixed resin consisting of an olefinic resin and a silane-grafted polymer obtained by grafting a silane to said olefinic resin,(B) 50 to 300 parts by weight of a hydrated metal compound, and(C) 0.1 to 30 parts by weight of a dicarboxylic acid or dicarboxylic acid anhydride derivative.
摘要:
A ferromagnetic resin composition obtained by filling a thermoplastic resin with 70 to 97% by weight of rare earth-cobalt powder, the surface of which has been coated with a thermosetting resin or a thermoplastic resin. The composition gives a plastic magnet excellent in impact resistance.