Search for dissertations about: "Impact Testing"

Showing result 16 - 20 of 483 swedish dissertations containing the words Impact Testing.

2. 16. On improvement of brake discs for heavy vehicles - Experimental testing and material modelling

   Author : Gael le Gigan; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element analysis; cast iron; cracking; drag braking; rig experiment; fatigue; hot spots; brake disc; material testing;

   Abstract : Disc brakes are commonly used in motorcycles, passenger cars, commercial vehicles, heavy-duty vehicles, passenger trains and landing gear of airplanes. Depending on the application, different types of brake discs can be found on the market with numerous designs, geometries and materials. READ MORE

4. 17. Application of Automated Non-contact Resonance Testing for Low Temperature Behavior of Asphalt Concrete

   Author : Abiy Bekele; Nils Ryden; Safwat Said; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Resonance testing; stiffness modulus; asphalt concrete; Non-contact excitation; Resonance frequency; Civil and Architectural Engineering; Byggvetenskap;

   Abstract : Impact resonance testing is a well-documented non-destructive testing method and its applications on asphalt concrete have also been implemented successfully. The test is carried out manually by inducing an impact in order to excite the test specimen and taking measurements of the vibrational response. READ MORE

5. 18. Development of a Novel Method for Lithium-Ion Battery Testing on Heavy-Duty Vehicles

   Author : Pontus Svens; Mårten Behm; Göran Lindbergh; Per Alvfors; Anders Malmqvist; KTH; []
   Keywords : Lithium-ion battery; HEV; field testing; heavy-duty vehicles;

   Abstract : Increasing demands for lower environmental impact from vehicles, including heavy-duty vehicles, have driven several vehicle manufacturers to consider adding hybrid electrical vehicles (HEV’s) to the product portfolio. Present research on batteries for HEV’s is mainly focused on lithium-ion battery chemistries, since lithium-ion batteries has the most promising technical potential compared to other types of batteries. READ MORE

6. 19. On the small strain stiffness of some Scandinavian clays and impact on deep excavation

   Author : Tara Wood; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; soft clay; small strain stiffness; degradation; seismic testing; sample quality;

   Abstract : This thesis presents the results of a comprehensive study on the small strain stiffness of several Swedish clays and its tentative effect on the design of retaining structures. A combination of field measurement techniques, seismic dilatometer and surface seismics, are complemented with bender element testing of the retrieved samples. READ MORE

7. 20. Neck injuries in rear impacts : Dummy neck development, dummy evaluation and test condition specifications

   Author : Astrid Linder; Chalmers University of Technology; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Neck; Injury; Anthropometric dummy; Severity; Impact test; Rear end collision; Seat; Mathematical model; Velocity; Thesis; Optimization; Mathematical neck models; Rear impact tests; Biomechanics; Road: Components of the vehicle; Road: Components of the vehicle;

   Abstract : The objective of the work underlying this thesis was firstly to develop a neck for a new rear impact dummy, to evaluate the complete dummy and to specify test conditions for a consumer test with attention to AIS 1 neck injuries in rear impacts. In the development of the dummy neck, a mathematical neck model was developed and evaluated. READ MORE