Essays about: "dynamic modulus of elasticity"

Showing result 1 - 5 of 10 essays containing the words dynamic modulus of elasticity.

1. 1. Wood and moisture-induced strains in a large deformation setting in 3D

   University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

   Author : Fredrik Ström; Anwar Obeido; [2022]
   Keywords : Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

   Abstract : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. READ MORE

3. 2. Characteristics assessment of aspen logs used in the production of matches

   University essay from Linnéuniversitetet/Institutionen för skog och träteknik (SOT)

   Author : Joseph Adejo Umoru; [2018]
   Keywords : Non-destructive technique; resonance; stiffness; aspen; moisture content; basic density; cross sectional diameter area; bark width; grain angle; taper; sound velocity;

   Abstract : Aspen (Populus tremula L.) accounts for about 2% of the total wood stock in Sweden. Sawmills use only a small part (about 5,000 m³fub) of round wood aspen per year. Since there are no Swedish gradings and design values for aspen, no aspen is used for structural purposes. READ MORE

4. 3. Design and Analysis of a Slanted Cable-stayed Building

   University essay from KTH/Bro- och stålbyggnad

   Author : Matea Bradaric; David Desimons; [2017]
   Keywords : Tubed Mega Frame; high-rise buildings; SAP2000; ETABS; cable-stayed structures; Tubed Mega Frame; höghus; SAP2000; ETABS; snedkabelstrukturer;

   Abstract : The Tubed Mega Frame (TMF) is a structural system for high-rise building developed by Tyréns AB. Compared to conventional structural systems, the TMF is a coreless system that transfers the loads through the perimeter of the building instead and in turn enables ability to support new architectural shapes and forms of buildings. READ MORE

5. 4. Bending properties of commercial wood-based panels by NDT methods

   University essay from Linnéuniversitetet/Institutionen för skog och träteknik (SOT)

   Author : Francesco Poggi; [2017]
   Keywords : Wood-based panels; Non-destructive testing; Bending properties; Resonance vibration; Time-of-flight; Modulus of elasticity; Modulus of rupture; Stress wave velocity; Relative humidity.;

   Abstract : This thesis work focuses mainly on the application of non-destructive testing (NDT) methods on wood-based panels (WBP) in order to estimate the bending properties. To prove the accuracy and applicability of these methods on WBP, their results are correlated with results from a standardized static bending test. READ MORE

6. 5. Rheological changes at the air-liquid interface and examining different kind of magnetic needles

   University essay from Karlstads universitet/Avdelningen för kemiteknik

   Author : Fredrik Anderson; [2015]
   Keywords : Interfacial Shear Rheometer; rheometry; magentic needles; oscillation; surface chemistry; modulus; elastic; viscous; viscoelasticity; Reologi; elasticitetsmodul; oscillering; magnetiska nålar; viskositet; viskoelasticitet;

   Abstract : The main objective in this work was to learn how the instrument, the Interfacial Shear Rheometer (ISR400), worked and to investigate how the rheological properties, storage modulus (elasticity), G' and loss modulus (viscous), G'', changes when the surface pressure at the air-liquid interphase changes. The second objective were to examine the different kind of magnetic needles used in the experiments and to conclude which type of needle is best for its specific field of analysis. READ MORE