Homology Estimate of Grain Size Measurement Based on the JIS Samples

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.813.120 ◽

2013 ◽

Vol 813 ◽

pp. 120-123 ◽

Cited By ~ 4

Author(s):

Kazuaki Nakane ◽

Koshiro Mizobe ◽

Katsuyuki Kida

Keyword(s):

Grain Size ◽

Test Method ◽

Size Measurement ◽

Crystal Density ◽

Industrial Standards ◽

Automated Tool

Test method for measuring austenite and martensite microscopic grain size of the steel is commonly done. Determination of average crystal density for the specimen is defined by JIS (Japanese Industrial Standards) in Japan. In general, this kind of determination is carried out by engineers. The results may depend on their skill, so automated tool to determine the grain size is needed. In this paper we try to apply homology method to analyze the structures. As the first trial, we apply this method to the figures on JIS. The result of homology is compared with the grain size defined in JIS. We can make sure the correlation between grain size and the homology value.

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Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part I: Introduction and Details on the Organization of the Program

Tire Science and Technology ◽

10.2346/1.2148774 ◽

1986 ◽

Vol 14 (4) ◽

pp. 201-218 ◽

Cited By ~ 3

Author(s):

A. G. Veith

Keyword(s):

Aspect Ratio ◽

Comprehensive Evaluation ◽

Test Method ◽

Interactive Effects ◽

Data Analyses ◽

Main Effect ◽

Systematic Determination ◽

Relationship Of ◽

The Relationship

Abstract This four-part series of papers addresses the problem of systematic determination of the influence of several tire factors on tire treadwear. Both the main effect of each factor and some of their interactive effects are included. The program was also structured to evaluate the influence of some external-to-tire conditions on the relationship of tire factors to treadwear. Part I describes the experimental design used to evaluate the effects on treadwear of generic tire type, aspect ratio, tread pattern (groove or void level), type of pattern (straight rib or block), and tread compound. Construction procedures and precautions used to obtain a valid and functional test method are included. Two guiding principles to be used in the data analyses of Parts II and III are discussed. These are the fractional groove and void concept, to characterize tread pattern geometry, and a demonstration of the equivalence of wear rate for identical compounds on whole tread or multi-section tread tires.

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