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Fatigue, Fretting and Flaw Detection

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Equivalence Sine and Random Vibration Equivalent Damage: sr_damage.pdf Sine and Random Vibration Equivalence: sineran.pdf Time-Scaling Equivalence Methods for Random Vibration Testing: tscale.pdf A Fatigue Equivalence Method for Enveloping Nonstationary Random Vibration. This tutorial also gives a method for deriving a equivalent fatiguePSD which envelops multiple events: enveloping_nonstationary.pdf Fackler, SVM-9, Equivalence Techniques for Vibration Testing: equiv.pdf Dr. A. Halfpenny, Accelerated Vibration Testing Based on Fatigue Damage Spectra: fatigue_damage_spectra.pdf

Shock & Vibration Fatigue Random Vibration Fatigue: Rfatigue.pdf Includes Miner's Cumulative Damage Index. Notes on Random Vibration Fatigue: fatigue_random_R.pdf Vibration and Fatigue Evaluation of Airplane Propellers, FAA Document: prop.pdf Fleeter and Zhou, Fatigue Life Prediction of Turbomachine Blading: blade.pdf Wincheski, et al, Quality Factor and Microslipping of Fatigue Cracks in Thin Plates at Resonant Vibration: q_cracks.pdf Segalman, et al, An Efficient Method for Calculating RMS Von MIses Stress in a Random Vibration Environment: VonMises_Random_loading.pdf

Flaw Detection H. Cole, On-Line Failure Detection and Damping Measurement of Aerospace Structures by Random Decrement Signatures, NASA CR-2205 nasa_cr2205_1.doc nasa_cr2205_2.doc nasa_cr2205_3.doc Alternate: cr2205.pdf Carino, The Impact-Echo Method: An Overview: impact_echo.pdf

Acoustic Fatigue Acoustic Fatigue of a Small Rectangular Panel: acoustic_fatigue.pdf Hess, et al, Studies of Structural Failure due to Acoustic Loading (July 1957): naca-tn-4050.pdf NASA Contractor Report 4587, Review of Sonic Fatigue Technology: sonic_fatigue.pdf AGARD Acoustic Fatigue Design Data: AGARD_AG_162_Part_1.pdf AGARD_AG_162_Part_2.pdf AGARD_AG_162_Part_3.pdf AGARD_AG_162_Part_4.pdf Vibration Response of a Panel to an Acoustic Pressure Field: ac_panel.pdf Calculated and Measured Stresses in Simple Panels Subject to Intense Random Acoustic Loading including the Near Noise Field of a Turbojet, NACA Report 1367: panels_acoustic_loading.pdf C. Mei, Prediction of Response of Aircraft Panels Subjected to Acoustic and Thermal Loads: aircraft_panel_response.pdf

Fretting van Dijk, van Meijl, Contact Problems due to Fretting and their Solutions: fretting1.pdf Horn, Avoiding Fretting Corrosion by Design: fretting2.pdf Automotive Connector Fretting: fretting3.pdf

Software Description	Executable	Source
Circuit board fatigue via Steinberg's formula.	circuit_board.exe	_
Vibration response spectrum of a single-degree-of-freedom system subjected to base excitation.	vrs.exe	vrs.cpp
SDOF fatigue calculation for a given PSD input. The fatigue metric is in terms of acceleration raised to a fatigue exponent.	vrs_fatigue.exe	vrs_fatigue.cpp
SDOF fatigue calculation for a given base excitation time history. The fatigue metric is in terms of acceleration raised to a fatigue exponent.	qsrs_fatigue.exe	qsrs_fatigue.cpp
Response of an individual single-degree-of-freedom system to base excitation.	sdof_ran.exe	sdof_ran.cpp
Response of an individual single-degree-of-freedom system to base excitation via Miles equation.	miles.exe	miles.cpp
Fatigue Equivalence Method for Enveloping Nonstationary Random Vibration beginning with the individual PSD functions.	psd_fatigue_eq.exe	psd_fatigue_eq.cpp

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