Login


Subscription

ProductPrice 2013
MathEduc Web€ 455
MathEduc Print€ 295
more...



Help on query formulation
Chaos theory and wire coilability: the Fracmat project. Pt. 2. The test machine. (English)
Math. Today, Southend-on-Sea 33, No. 6, 176-180 (1997).
This article is the second of two that describe the FRACMAT project. FRACMAT is a new quality control machine which solves the long-standing problem of characterising the coiling quality of wires. The machine accepts a wire sample, forms it into a long coil on a mandrel, and automatically measures the spacing between successive coils with a laser micrometer. At the same time it measures the sequential surface friction. The resulting data are analysed by a computer, using chaos-theoretic methods of phase space reconstruction, as described in the first article. The data analysis produces quantitative indicators of the quality of the wire. In this paper we describe the physical construction of FRACMAT and illustrate its use with test data from wire samples supplied by industrial members of the consortium. The results show a strong correlation between the coilability as assessed by FRACMAT, and coilability as assessed by attempting to form springs on a coiling machine. The crucial difference is that FRACMAT carries out the test in three minutes, whereas the traditional method takes 6-8 hours or more. (Orig.)
Classification: K90
Valid XHTML 1.0 Transitional Valid CSS!