Faculty Advisor

Brown, Christopher A.


Using axiomatic design, we designed a device to measure the sharpness of ski edges. Because no quantifiable methods exist, we conducted research to define the relationship between an edge’s curvature and performance. We defined performance as an edge’s ability to hold against a material under simultaneous normal and tangential loads. Using profiles extracted from 3D topographic measurement, the curvatures of our steel edge samples were calculated as a function of scale and position using Heron’s method. Our analysis discovered the optimal scale range to observe ski edge curvatures and used our results to design a portable device for skiers to check edge quality. The device design utilized optics to measure an edge by extracting the curvature from the distortion of a projected line.


Worcester Polytechnic Institute

Date Accepted

April 2015


Mechanical Engineering

Project Type

Major Qualifying Project



Advisor Department

Mechanical Engineering