PPT-Fracture and Creep in the

AllTungsten ARIES Divertor Jake Blanchard University of Wisconsin Madison presented by Mark Tillack JapanUS Workshop on Power Plant Studies and Advanced Technologies 2627 February 2013. Beyond a certain limit Corrosion Oxidation Slip Twinning Review brPage 3br Slip Dislocation motion Plastic Deformation in Crystalline Materials Twinning Phase Transformation Creep Mechanisms Grain boundary sliding Vacancy diffusion Dislocation clim Properties and applications of engineering materials. Aims. To explore extreme cases of material failure.. To raise awareness of the importance of design to help reduce the risk of failure in a material.. X.R. Wang. 1. , S. Malang. 2. , M. S. Tillack. 1 . . 1. University of California, San Diego, CA. 2. Fusion Nuclear Technology Consulting, Germany. ARIES-Pathways Project Meeting. Bethesda, Washington DC. Dara . Navaei. , Siegfried Malang, . Xueren. Wang. ARIES . Project Meeting. Jan. 26. th. ,2011 UCSD. Definition of Creep. Creep is a rate dependent material nonlinearity in which the material continues to deform under a constant load (ANSYS). Creep is highly time dependent and it displays its effects over a long time. Creep has 3 stages:. 1)A coil of solder will be suspended from a clamp into a glass.. Boiling water will then be added.. You must visually inspect the coil every 30 seconds for 10 minutes and note any changes.. 2)An aluminium rod will be handed to each pair.. VIRGINIA CONCRETE CONFERENCE. March 3-4, 2011 . Presented by:. Teddy Theryo, P.E.. Parsons Brinckerhoff . SEGMENTAL BRIDGE GROUP. Presentation Outline. Introduction. Understanding of Creep & Shrinkage. By: Mikhail . Yakhnis. & Robert Zhang. Motivation. Articular cartilage . transfers load between bones . enables smooth motion along joints. Cartilage has . limited capacity for self repair. Applications: biomaterials, prosthetics, biomedical devices. X.R. Wang. 1. , S. Malang. 2. , M. S. Tillack. 1 . . 1. University of California, San Diego, CA. 2. Fusion Nuclear Technology Consulting, Germany. ARIES-Pathways Project Meeting. Bethesda, Washington DC. Dara . Navaei. , Siegfried Malang, . Xueren. Wang. ARIES . Project Meeting. Jan. 26. th. ,2011 UCSD. Definition of Creep. Creep is a rate dependent material nonlinearity in which the material continues to deform under a constant load (ANSYS). Creep is highly time dependent and it displays its effects over a long time. Creep has 3 stages:. Jake Blanchard. University of Wisconsin – Madison. August 2012. Introduction. The ARIES Project is exploring the feasibility of using tungsten as a structural material for plasma-facing components. Dynamic Fatigue. Fatigue is failure due to a stress being repeatedly applied. to a metal. After a number of cycles the component fails.. Examples include aircraft, axles, and shafts.. Stresses. Cyclic – tension compression fully reversed. save you money. .. 60 – 70% of the . hours. . spent thawing a culvert . are . used to FIND . IT first. . The . Culvert Creep. was specially designed for locating, snaking and thawing your culvert.. m) . ; deformation or strain is measured and plotted as a function of elapsed time as illustrated in figure 2. . For metallic materials most creep tests are conducted in uniaxial tension using a specimen having the same geometry as for tensile tests.. The rate of this deformation is a function of the material properties, exposure time, exposure temperature and the applied structural load. Depending on the magnitude of the applied stress and its duration, the deformation may become so large that a component can no longer perform its function — for example creep of a turbine blade will cause the blade to contact the casing, resulting in the failure of the blade. .