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Showing 1 to 8 of 8 for “"fatigue cycling"”.
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Fiber fracture in continuous-fiber reinforced composite materials during cyclic loading
… any significant loss of stiffness during fatigue cycling compared to other lay-ups. Even if stiffness degradation was significant, due to the nature of damage in this material system it would be impossible, practically, to monitor that change using conventional techniques (e.g. an …
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Damage development under compression-compression fatigue loading in a stitched uniwoven graphite/epoxy composite material
… and growth under compression-compression fatigue loading were investigated for a stitched uniweave material system with an underlying AS4/3501-6 quasi-isotropic layup. Performance of unnotched specimens having stitch rows at either 0° or 90° to the loading direction was compared. Special …
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Neural Network Fatigue Life Prediction in 7075-T6 Aluminum from Acoustic Emission Data
… acoustic emission (AE) -data associated with fatigue cracks in aluminum fatigue specimens and to use early cycle life AE data to predict failure in such members. An AE data acquisition system coupled with a Kohonen self organizing map and a back propagation neural network were used to perform …
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Classification of Acoustic Emission Signals from an Aluminum Pressure Vessel Using a Self-Organizing Map
… sheet. AE waveforms were recorded during fatigue cycling of one pressure vessel using a wide band transducer and a digital oscilloscope connected to a computer. The source for each signal was determined using two narrow band transducers and a LOCAN-AT data acquisition system. The power …
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Neural Network Detection of Fatigue Crack Growth in Riveted Joints Using Acoustic Emission
… AE waveforms were recorded during tensile fatigue cycling of six notched and riveted 7075-T6 specimens using a broadband piezoelectric transducer and a computer interfaced oscilloscope. The source of 1,311 signals was identified based on triggering logic, amplitude relationships, and time …
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The effect of interlayers on the mechanical response of composite laminates subjected to in-plane loading conditions
… fully-reversed (R=-1), tension-compression fatigue cycling, and long-term tensile loading. A new test method, called the Incremental Strain Test (IST), was developed in an attempt to isolate and distinguish the long-term, tensile response of the interlayered and baseline Iaminates. This …
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Effects of Fatigue in the Elastic Regime on the Mechanical Properties of Nuclear Pressure Vessel Steels
Made available in DSpace on 2017-07-06T18:56:02Z (GMT). No. of bitstreams: 3 Riedy_Alexander_W_MS.pdf: 57625324 bytes, checksum: a63828112673c0818a625c2ee346d239 (MD5) Riedy_Alexander_W_MS_ABS.pdf: 941457 bytes, checksum: a3bbb5cf4be77548e913c9b5bf833253 (MD5) license.txt: 4813 bytes, checksum: …
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Economic and fuel-performance analysis of extended operating cycles in existing light water reactors (LWRs)
… are identified: (1) stress and strain, (2) fatigue cycling, (3) fretting, (4) waterside corrosion, (5) axial growth and rod bowing, (6) rod internal pressure, (7) primary hydriding, (8) cladding collapse, (9) cladding overheating, and (10) fuel centerline melt. Of these ten issues, (7) and …