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http://dx.doi.org/10.7474/TUS.2020.30.4.394

Calculation Method of Constant Linear Velocity Spiral Path for Pin-on-disk Abrasion Test using a Hollow Type Rock Sample  

Kang, Hoon (Korea Research Institute of Standards and Science)
Kim, Dae-ji (Korea Institute of Industrial Technology)
Song, Changheon (Korea Institute of Industrial Technology)
Oh, Joo-Young (Korea Institute of Industrial Technology)
Cho, Jung-Woo (Korea Institute of Industrial Technology)
Publication Information
Tunnel and Underground Space / v.30, no.4, 2020 , pp. 394-403 More about this Journal
Abstract
This technical note describes the calculation method of continuous constant linear velocity Archimedean spiral paths which are applied to the pin-on-disk abrasion test. Approximate constant linear velocity Archimedean spirals have unstable velocities in the very near region of the rotational origin. Thus, in this technical note, the offset distance from the rotational origin was given by using a hollow type rock sample to maintain the constant velocity during the test. Also, to connect the inward and outward spirals continuously, the information of start and end points were input on the next spiral path consecutively. Furthermore, the calculation program was developed to provide convenience for calculating constant linear velocity spirals according to the specimen dimension and abrasion test conditions.
Keywords
Hollow type sample; Pin-on-disk abrasion test; Archimedean spiral; Constant linear velocity; Calculation method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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