聚酯薄膜制造的分析检测

本文根据聚合物科学基本原理,从生产实践中总结出聚酯薄膜的分析检测方法,综述了磁带用聚酯薄膜的原料分析,膜质量生产控制及成品检验等问题。这不仅是制备优质磁带用聚酯薄膜必不可少的质量检验要求,也是研究PET薄膜结构与性能以及成膜机理的强有力的手段。     

A system model to predict the results of ultrasonic scattering experiments

A system model is presented for the computation of ultrasonic scattering experiments. It includes a two-dimensional transducer model, whose diffraction field is given as an elastic plane wave spectral decomposition. An electromechanical reciprocity theorem is used to calculate the voltage at the terminal of the receiver. As a flaw-model, we use a strip-like crack, whose scattered field is calculated by the elastodynamic Huygens principle including mode conversion effects. Results in the time domain are presented for LLT- and 45° -tandem inspection situations and compared with measurements. Agreement between the model predictions and experimental results is typical to within 2 dB for average scan amplitudes.     

武钢5~＃高炉料面温度红外线检测及计算机信息处理IRBIS－DPS系统

本文较全面地介绍了ＩＲＢＩＳ－ＤＰＳ系统的组成、原理和功能，以及计算机信息处理的主要方法。     

A class of adaptive model- and object-driven nonuniform sampling methods for 3-D inspection

Inspection of manufactured parts and assemblies often requires large amounts of information in the form of test probe point locations and large amounts of time to perform the inspection. By optimally locating the probe points it is possible to maintain inspection reliability using fewer test probes in a reduced amount of time. We have developed algorithms which use part model and manufacturing process information to generate an optimal probe-point location set for routine inspection in a modelbased, open-loop mode. An alternate set of adaptive algorithms that sequentially generates probe-point locations in an object-based, closed-loop mode characterizes a fault when one is detected. Test results show that the algorithms perform favorably on a large class of surfaces.     

Group manual dexterity in women.

To determine the extent to which group performance could be predicted from knowledge of the performance of the group's members, 60 pairs of university women were first given six individual trials on a modified Purdue Pegboard task, and then six trials in which the members of the pair worked together. For each pair, the 'high' and 'low' scorer (on the individual trials) was identified, and correlations were calculated between the 'high' score, the 'low' score, the difference score, and the score for the pair on the second set of trials. These results are compared with previous results from men students. "The most important fact which emerges… is that a surprisingly small proportion of the total variance on the group-performance task can be predicted… [from the individual-performance scores]… " (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A machine vision system for inspection of keyboards

A machine vision system for automatic inspection of keyboards is described. The system verifies that each location on a keyboard contains the correct, properly oriented key and that the graphics are not badly distorted. The graphics are inspected on the top and front surface of keys that vary widely in color, contour, surface texture and graphic content. Economical solutions are presented to a number of problems related to the design of the system's mechanics, optics, illumination, data reduction, pattern location and graphics discrimination. Operating procedures for training and running the system are also presented along with preliminary results.     

The pigeon as a quality-control inspector.

"Many of the operations involved in the quality-control inspection of commercial products consist of monotonous checking jobs performed by human operators." They require little manual skill or dexterity, good visual acuity, color vision, and are difficult to automate. A device was built to permit inspection of pharmaceutical capsules by pigeons; pigeons "inspected on a 99% correct basis within 1 wk. of daily discrimination training." A technique for using 2 birds—double inspectors—was suggested with reward for defective capsules detected only when they both agreed for the purpose of further reducing error probability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

大型集装箱检测系统中验出站的设计与实现

在大型集装箱检测系统中，验出站负责控集装箱的放行或开箱检查，本文针对验出站的实际需求，分析并比较几种不同的总体结构设计方案。     

A flexible inspection cell for machined parts

This paper describes the development of a computer-aided vision system, in a flexible inspection cell, for checking the dimensional accuracy of machined parts. Most vision systems identify parts for which models are already reside in the database, whereas this particular system allows parts for which models are not available in the database to be checked. Also described in the paper is a feature-based approach which this system adopts for identifying the parts.