Accession Number : ADP002443

Title :   Effect of Abrasive Planing Stock Removal Rate on Adhesive-Bonded Joint Performance,


Personal Author(s) : River,B. H. ; Murmanis,L. ; Stewart,H. A.

Report Date : 25 SEP 1980

Pagination or Media Count : 11

Abstract : Abrasive planing has certain economic and technical advantages over knife planing of lumber. However, in many instances, the adhesive bonds in lumber products surfaced by abrasive planing before bonding have been found to be of poor quality. In this first of a series of studies on how abrasive planing affects bondquality, feed speed and depth of cut were investigated. Damage was found at every combination of these machining variables evaluated. The amount of damage in terms of bond strength reduction was not strongly or even consistently related to the machining variables. There was no significant difference in the bond strengths among the six combinations of feed speed and depth of cut. The ASTM D-905 block shear specimen when exposed to a soak-dry cycle before testing was far more sensitive to the machining damage than unexposed shear specimens or a tension test specimen, unexposed or exposed. Swelling and shrinking of the crushed cells by the soak-dry treatment in combination with the higher internal stress of the shear specimen account for this difference in sensitivity. (Author)

Descriptors :   *Wood, *Adhesives, *Bonded joints, Adhesive bonding, Performance(Engineering), Planing surfaces, Surface roughness, Quality, Bonding, Strength(Mechanics), Shear properties, Exposure(General), Aging(Materials), Standards, Symposia

Distribution Statement : APPROVED FOR PUBLIC RELEASE