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- Torsion; Shear; Size Effect; Structural Composite Lumber; universal-type test machine (1)
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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Diffusion Process And Formation Of Super-Spin-Glass State In Soft Magnetic Fe/Pt System, D. Aurongzeb, M. Holtz, L. Menon
Diffusion Process And Formation Of Super-Spin-Glass State In Soft Magnetic Fe/Pt System, D. Aurongzeb, M. Holtz, L. Menon
Latika Menon
We report results on surface and micromagnetic structures of Fe thin films consisting of a Pt underlayer. We use atomic force microscopy to study the surface structure evolution of the Fe films as a function of annealing time at an annealing temperature of 800 °C. Power spectral density analysis shows saturation in roughness exponent after 15 min of annealing. However, lateral correlation length and roughness continue to increase for up to 45 min. At high annealing temperature, the authors find two separate phase correlation lengths and a single surface correlation length indicating super-spin-glass state in the system.
Partnering To Improve Engineering Learning And Performance, Donald Plumlee, Steven Villachica, Linda Huglin, Shannon Rist
Partnering To Improve Engineering Learning And Performance, Donald Plumlee, Steven Villachica, Linda Huglin, Shannon Rist
Linda Huglin
Our effort addresses the question: How can successes in engineering education research translate into widespread instructional practice? Published research has provided a robust set of documented tools and techniques for transforming individual engineering courses from traditional lecture-based formats to those that emphasize project- and problem-based learning[1]. These new formats support transfer of learned skills to subsequent courses and the workplace. Unfortunately, the mere availability of such research has not resulted in its widespread adoption across engineering programs. The pace of adoption has been slow and sporadic, which has led researchers to identify a "Valley of Death" separating research and practice …
Torsional Shear Strength And Size Effect In Structural Composite Lumber, Zhuo Yang
Torsional Shear Strength And Size Effect In Structural Composite Lumber, Zhuo Yang
Zhuo Yang
The natural variation of strength properties within brittle materials leads to size effect, a well-known phenomenon whereby the mean strength of a material is observed to decrease as the stressed volume increases. An important implication of size effect is that size adjustment parameters must be incorporated into multi-axial constitutive and failure models used in numerical simulations to predict material response to loading. This experimental study seeks to verify and quantify the presence of depth effect under shear failure in the orthotropic principal material directions of parallel strand lumber (PSL) and laminated veneer lumber (LVL). Torsion tests have been performed on …
Angular-Dependences Of Giant In-Plane And Interlayer Magnetoresistances In Bi2te3 Bulk Single Crystals, Zengji Yue
Angular-Dependences Of Giant In-Plane And Interlayer Magnetoresistances In Bi2te3 Bulk Single Crystals, Zengji Yue
Zengji Yue
Angular-dependences of in-plane and interlayer magnetotransport properties in n-type Bi2Te3 bulk single crystals have been investigated over a broad range of temperatures and magnetic fields. Giant in-plane magnetoresistances (MR) of up to 500% and interlayer MR of up to 200% were observed, respectively. The observed MR exhibits quadratic field dependences in low fields and linear field dependences in high fields. The angular dependences of the MR represent strong anisotropy and twofold oscillations. The observed angle-dependent, giant MR might result from the strong coulomb scattering of electrons as well as impurity scattering in the bulk conduction bands of n-type Bi2Te3. The …