Force-at-yield appraisal of veneered engineered wood (Plywood) products in Nigerian market was conducted on the three most commonly used samples with the objective of providing technical guidance for material selection as a result of unavailability of the requisite technical data to obviate the usual superfluous deprivation of earnings due to failure associated with using different inappropriate veneered engineered wood (Plywood) makes for sustainable economic development. In conformity to ASTM D1037 standard and requirement with the testometric testing machine, four force-at-yield tests were conducted per sample, and digital aggregate average values reported. Stemmed from computer program utilizing the data generated were plots on the dynamics of the force-at-yield of the samples. ANOVA showed statistically significant differences in force-at-yield among samples F(2,9) = 4.32*106, p < 0.0001. Mean force-at-yield values were 111.43±0.13N, for Viewpoint, 210.78±0.13N, for Plywood EQ and 381.63±0.13N for Caledonian. Tukey HSD post-hoc results showed that all pairwise comparisons were significant at p < 0.0001, with effect sizes indicating very large practical differences as revealed by Cohen’s d. Coefficient of variation was below 0.15% for all groups, reflecting high test precision. It is concluded that Caledonian plywood exhibits the highest resistance to yield, followed by Plywood EQ and then Viewpoint. These variations could be attributed to adhesives’ chemical properties as the samples were prepared so as to conform with comparable conditions. Biomedical, Metallurgical, Mechatronics, Chemical, Mechanical, Civil, Production engineers and construction companies as benchmark should value this in developments of their designs and constructions. Force-at-Yield of other engineered wood products types yet to be researched should receive research attention soon.
Ilo et al. (Sun,) studied this question.