Hitachi, Ltd.

Masaaki Asano

Tatsuya Suzuki

Takashi Kubota

Seii Miyakawa

Toshijiro Ohashi

A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.

Fraction defective estimating method, system for carrying out the same recording medium

Method and apparatus for evaluating quality of a product, and a recording medium therefor. The invention includes creating and storing in advance a workshop evaluating database, extracting from the prepared workshop evaluating database those failure occurrence ratio indexes which correspond to workshop facility levels of an input manufacturing workshop for workshop-conditioned failure influential items thereof, respectively, and evaluating/estimating failure occurrence likelihood for standard manufacturing works in the manufacturing workshop, the failure occurrence likelihood being then stored as workshop index in a product evaluating database, and evaluating/estimating a quality indicating a work-related defective ratio for the products to be manufactured through a plurality of manufacturing works in the manufacturing workshop by using the workshop indexes concerning that manufacturing workshop which has been stored in the article evaluating database in the workshop evaluating step.

Evaluation method and its apparatus of work shop and product quality

Fraction defective estimating method, system for carrying out the same and recording medium

Fraction defective estimating method and system for estimating an assembly fraction defective of an article

Fraction defective estimating method, system for carrying out the same

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Ibaraki-ken, Japan

Masaaki Asano