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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

Yao & Munse, Low-Cycle Fatigue of Metals - Literature Review: low_cycle_fatigue_literature.pdf

Henderson & Piersol: Evaluating Fatigue Producing Vibration Environments using the Shock Response Spectrum: Henderson_Piersol.pdf

Low-Cycle Fatigue

Yao & Munse, Low-Cycle Fatigue of Metals - Literature Review: low_cycle_fatigue_literature.pdf
See also: 

Miner’s Cumulative Fatigue via Rainflow Cycle Counting

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

Rainflow Plot

ASTM E 1049-85 (2005) Rainflow Counting Method

Rainflow Cycle Counting in Fatigue Analysis: rainflow_counting.pdf

Matlab Script: rainflow.m

Alternate Matlab Script: rainflow_bins.m

C++ Executable: rainflow.exe

C++ Source: rainflow.cpp

Secil Ariduru, Fatigue Life Calculation by Rainflow Cycle Counting Method: Ariduru_rainflow.pdf

On the use of a Narrowband Random Power Spectral Density to Cover a Pure Sinve Vibration Environment via Rainflow Fatigue: random_sine_rainflow.pdf

See also:  

Miner’s Cumulative Fatigue via Rainflow Cycle Counting

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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