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Showing 1 to 20 of 287 for “"Failure mechanisms"”.
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FAILURE MECHANISMS OF STRUCTURAL ADHESIVE JOINTS
… by wicking along the interface. Also the mode of failure using SEM was noticeably interfacial throughout the experiment. Once inside the joint, permanent damage may occur since, on redrying, joints exposed to moisture did not recover their strength. Stress analysis on compression test data showed …
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A stochastic model of component failure mechanisms
… reaction is used in representing a component failure mechanism. The component is said to fail when the concentration of reaction product accumulates beyond an acceptable level. The process of accumulating reaction product is modelled as a Markov pure birth process which, in turn, is used in …
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Failure mechanisms in impact erosion of ductile materials
… to predict the erosion loss. Using suitable failure criteria the amount of material lost was predicted. For this purpose, a program written using AWK language was used to find the number of failed elements. The results of this model were compared with the experimental results of Sheldon and a …
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Failure mechanisms of dielectric materials for electric motors
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01
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System level ESD failure mechanisms, analysis and test method
… for printed circuit board is presented and the mechanisms that the ESD event couples into the digital devices is studied"--Abstract, page iv.
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Failure Mechanisms and Strength of Non-Persistent Rock Joints
… of joint), for the average normalized stress at failure. Conditions causing BMSR to be different from the reference value include: (a) for mode 1, shear failure in the plane of the joints through bridge and non-persistent joints, BMSR decreases, as the ratio of normal stress, $\sigma\sb{\rm n}$, …
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Assessment of failure mechanisms for built-up roofing systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1987.
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Investigation of the Failure Mechanisms of Intact and Deteriorated Culverts
… corrosion as well as the influence of different failure mechanisms on corrugated steel culverts. An accelerated corrosion technique was first developed to degrade multiple pipe specimens to different degrees of deterioration. A total of six deteriorated pipe specimens were created. Two …
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Microstructure and Hydrogen Induced Failure Mechanisms in Iron-Nickel Weldments
A recent series of inexplicable catastrophic failures of specific subsea dissimilar metal Fe-Ni butter welds has illuminated a fundamental lack of understanding of both the microstructure created along the fusion line as well as its impact on the hydrogen susceptibility of these interfaces. In …
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Quantitative discovery and qualitative reasoning about failure mechanisms in pavement
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1986.
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Assessment of Rib Failure Mechanisms Using Discontinuum Mechanics Based Modeling Approach
<p>"Coal mine rib failures are major safety and health challenge for coal mines worldwide. The need for clear procedures to evaluate mine rib behavior and to provide an efficient, reliable, and consistent rib control protocol is needed. Understanding coal rib geomechanics is essential for improving …
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Understanding and Controlling Failure Mechanisms of the Zinc Anode for Rechargeable Alkaline Batteries
… carried out, the first of which investigates failure mechanisms and material evolution during cycling of 27 zinc-manganese dioxide (Zn-MnO<sub>2</sub>) cells in 37 wt% potassium hydroxide (KOH) electrolyte wherein the percent utilization of the theoretical capacity of the Zn electroactive …
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Damage and failure mechanisms under fatigue in long fibre composites with ultra-thin plies
El estudio del comportamiento a fatiga de los materiales compuestos es de gran interés en el ámbito científico debido al carácter no estático de las cargas que sufre una estructura en servicio. En los últimos años, la aparición de láminas ultradelgadas, de hasta 15 20 μm de espesor, ha tomado …
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Isolating Failure Mechanisms in a Fiberglass/Epoxy Tensile Test Specimen Using Acoustic Emission Signal Parameters
… emission (AE) signal parameters to isolate the failure mechanisms in a 0° unidirectional, fiberglass/epoxy tensile test specimen. Since several failure mechanisms were known to be present, the lack of any distinctly identifiable bands in the original amplitude distribution indicated that there …
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Multiscale modeling and simulation of deformation and failure mechanisms of hierarchical alpha-helical protein materials
… been widely investigated, the deformation and failure mechanisms of biological protein materials remain largely unknown, partly due to a lack of understanding of how individual protein building blocks respond to mechanical load and how the hierarchical features participate in the function of …
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FAILURE MECHANISMS OF ULTRA HIGH MOLAR MASS POLYETHYLENE SINGLE FIBERS AT EXTREME TEMPERATURES AND STRAIN-RATES
… be pseudo-brittle, plateauing, necking, and non-failure and transitions between these phases were observed within a strain-rate dependent temperature range. For low and intermediate strain rates, a temperature and strain-rate equivalence is observed: a decadal increase of strain-rate is …
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Modeling and Interpretation of Fiber Orientation-Based Failure Mechanisms in Machining of Carbon Fiber-Reinforced Composites
… of FRP two-phase microstructures, the fiber failure mechanisms occurring in the machining process are not fully understood. Many experimental and modeling techniques have been implemented to more fully explain the nature of the fiber failure mechanisms in the machining process, but these have …
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