The cyclic property of loading reduced the strength of the dowel-bearing type wood beam-column connections, but increased the strength of fiberbearing type wood beam-column connections. More importantly, the authors identified a possible location of safety concern in current national design ...
The ultimate strengths and strains to failure are measured in the tests, and the corresponding strain fields are analyzed. The effects of solid polymer in the wood pore space on mechanical properties and strain field details are also investigated. The main engineering science objective is to ...
Wood strength is complicated Think of wood as a very intricately patterned structure, composed of different components in varying lengths, thicknesses, and intertwining patterns. It’s difficult to speak in generalities with a high degree of certainty, but here are some things to consider in a wo...
The reason is that data are from the same opening displacement of the precrack in the beam specimen, δCOD, see Fig. 2b. The presence of PMMA in native wood significantly reduces local strain field heterogeneity and anisotropy. From Fig. 3, we note that the strain difference between ...
potential damage degree, etc., as well as an evaluation of the strengths and weaknesses of the former uses of wood through a SWOT47,48analysis to determine the strength and structural properties aged wood has and how to determine the possibility of using reclaimed wood in furniture production49...
There is an inherent measurement error associated with the first few measurement points in X-ray densitometry (within ca. 0.3 mm from the densified surface), where the X-ray beam covers partly air and partly wood, resulting in an underestimated density value for approx. the first seven ...
They should also protect the wooden object against further dimensional changes (swelling or shrinkage), as well as biotic and abiotic degradation, and maintain the mechanical strength of wood. Since these issues are closely related to wood hygroscopicity23,24,25,26,27, its reduction by conservation...
I did find the tensile strengths parallel to the grain of a few woods, excluding hickory (the website is a good reference though). I am not sure why this value is cited so much more than parallel, as it seems that if u were to load the beam in tension, u would try to load it...
Wood based panel webbed I-beams showed three main failure modes: shear/bending failure, delamination between flange and web, and buckling, depending on the types of I-beam configurations and web materials. The strength and stiffness were closely related to both I-beam types and web materials, ...
Shear strength parallel to grain—Ability to resist inter- nal slipping of one part upon another along the grain. Values presented are average strength in radial and tangen- tial shear planes. Impact bending—In the impact bending test, a hammer of given weight is dropped upon a beam from ...