Essays about: "stress softening"

Showing result 1 - 5 of 6 essays containing the words stress softening.

1. 1. An Investigation of the Adhesive Interaction between Polyethylene and Silicone with DMA and AFM

   University essay from Lunds universitet/Centrum för analys och syntes

   Author : Joel Falk; [2019]
   Keywords : Atomic Force Microscope; Adhesion; Characterization; Dynamic Mechanical Analysis; Injection Molding; Polyethylene; Polymer; Silicone; Test method development; Materials chemistry; Materialkemi; Technology and Engineering;

   Abstract : Stickiness between materials can be a challening task when dealing with the complex interactions and processes related to packaging engineering. Part of the problem is that many factors like temperature, pressure, surface treatment as well as surface roughness all could play a part in contributing to the stickiness between materials. READ MORE

3. 2. Modeling of pore pressure in a railway embankment

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Marcus Vestman; [2018]
   Keywords : PLAXIS; Pore pressure; Railway;

   Abstract : LKAB and Trafikverket want to increase the maximum allowed axial load from 30 tons to 32,5 tons for the northern part of Malmbanan. There are ongoing investigations of the condition of the railway with the current axial load of 30 tons. The investigations do not include one of Trafikverket's concerns about the condition of the railway. READ MORE

4. 3. Structural analysis of thermal interface materials and printed circuit boards in telecom units - a methodology

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Mattias Good; [2016]
   Keywords : hyperelastic; viscoelastic; fem; finite element method; telecom; cooling; solid mechanics; nonlinear; uniaxial compression; printed circuit board; pcb; polymer; rubberlike; filled silicone rubber; gappad; thermal pad; mullins effect; cyclic loading; stress softening;

   Abstract : En struktur analys på Ericssons MINILINK-6352 har utförts för att undersöka spänningar och deformationer på enheten, främst med fokus på de termiska gränskiktsmaterialen och buktningar av kretskortet. Dessa är viktiga aspekter när man överväger om enheten är termiska lämpad ur en mekanisk synvinkel, där god ytkontakt mellan de olika kropparna är avgörande för ordentlig kylning genom värmeledning. READ MORE

5. 4. Investigation of Mechanical Properties of Thermoplastics with Implementations of LS-DYNA Material Models.

   University essay from KTH/Hållfasthetslära (Inst.)

   Author : Peter Appelsved; [2012]
   Keywords : Glass-fiber reinforced thermoplastics; polyamide; Hill’s plasticity criterion; strain recovery; cyclic loading; cyclic softening; compression strength; 3 point bend test; LS-DYNA;

   Abstract : The increased use of thermoplastics in load carrying components, especially in the automotive industry, drives the needs for a better understanding of its complex mechanical properties. In this thesis work for a master degree in solid mechanics, the mechanical properties of a PA 6/66 resin with and without reinforcement of glass fibers experimentally been investigated. READ MORE

6. 5. Low Temperature Performance of Wax Modified Mastic Asphalt

   University essay from KTH/Väg- och banteknik

   Author : Ali Azhar Butt; [2009]
   Keywords : montan wax; modified binders; mastic asphalt; TSRST; energy saving; low temperature performance;

   Abstract : The current interest in energy saving asphalt production techniques is great and several new processes have been developed to reduce the mixing and compaction temperatures for hot mix asphalt. In particular, mastic asphalt products (Gussasphalt) require high working temperatures, and harder requirements concerning bitumen fumes and carbon dioxide emissions have been introduced for such products. READ MORE