The effectiveness of the light-gap method for monitoring saw tensioning

This thesis investigates the effectiveness of the light-gap method for evaluating the saw tensioning process. In particular, it examines the ability of the light-gap profile to indicate changes in saw natural frequency and stiffness caused by the tensioning stresses. The light-gap method for bandsaws is studied in detail. Many of the results are also expected to be applicable to circular saws. Although the light-gap method is a poor indicator of the details of the tensioning stress distribution, it does provide a good measure of changes in natural frequencies and stiffness caused by the tensioning process. In particular, when a bandsaw is tensioned to the traditional light-gap profile, the frequency and stiffness of the saw can be characterized by the curvature of the light-gap profile. Additionally, the light-gap method offers important practical advantages over other tensioning evaluation techniques. The light-gap method indicates local non-uniformities in the tensioning state, guides roll path location and indicates levelling defects. For these reasons, the light-gap method is confirmed to be a highly effective and rational way of monitoring the saw tensioning process.

Name thesis:degree_name

Master of Applied Science - MASc

Level thesis:degree_level

master's

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor dc:publisher

University of British Columbia

Year dc:date

1993

Author dc:creator

• Lister, Peter F.

Statement dc:rights

• For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.

Language dc:language

eng

Handle dc:identifier

http://hdl.handle.net/2429/2420

OAI identifier oai:identifier

oai:circle.library.ubc.ca:2429/2420