Examination of wood adhesive bonds via MicroCT: The influence of pre-gluing surface machining treatments for southern pine, spotted gum, and Darwin stringybark timbers

The successful manufacturing of glulam from several important Australian commercial timbers is quite challenging due to difficulties in gluing. Improvements adhesive bond performance spotted gum, Darwin stringybark, and southern pine timber have been achieved using alternative pre-gluing surface machining methods, e.g., face milling sanding-post planing, when compared conventional planing methods. In order improve the understanding effects that different methods on performance, this study used micro X-ray computed tomography microscopy assess key criteria. There was a considerable loss amount after wet dry test cycles for all species. also an extremely high frequency voids glue lines species, which would negatively impact strength durability. Face mill prepared boards resulted thicker greater resistance adhesion loss, via planing. For two hardwood penetration; however, pine, there were no significant differences penetration between three treatments. Adhesive much deeper gum stringybark.