Application of Lock-In Infrared Thermography Technology in Rapid Determination of The Fatigue Limit of Aluminum Alloy Riveted Component

2012 ◽  
Vol 6 (13) ◽  
pp. 409-416
Author(s):  
Meng Li ◽  
Ping Zhao
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Limit ◽  
Infrared Thermography ◽  
Rapid Determination ◽  
Lock In

Rapid Determination of Fretting Fatigue Limit by Infrared Thermography

2017 ◽  
Vol 58 (2) ◽  
pp. 259-267 ◽  
Author(s):  
S. Chhith ◽  
W. De Waele ◽  
P. De Baets
Keyword(s):  
Fatigue Limit ◽  
Infrared Thermography ◽  
Rapid Determination ◽  
Fretting Fatigue

scholarly journals Comparison of Experimental Thermal Methods for the Fatigue Limit Evaluation of a Stainless Steel

Metals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 677 ◽  
Author(s):  
Mauro Ricotta ◽  
Giovanni Meneghetti ◽  
Bruno Atzori ◽  
Giacomo Risitano ◽  
Antonino Risitano
Keyword(s):  
Fatigue Limit ◽  
Rapid Determination ◽  
Mechanical Energy ◽  
Thermal Methods ◽  
Aisi 304L ◽  
Material Fatigue ◽  
Static Tensile ◽  
Energy Dissipated ◽  
Material Temperature

This paper regards the rapid determination of fatigue limit by using thermal data analysis. Different approaches available in the literature to estimate the fatigue limit of cold-drawn AISI 304L bars are analyzed and compared, namely, temperature- and energy-based methods. Among the temperature-based approaches, the Risitano Method (RM) and the method based on material temperature evolution recorded during a static tensile test were analyzed. Regarding the energy-based approaches, the input mechanical energy density stored in the material per cycle (i.e., the area of the hysteresis loop), the heat energy dissipated by the material to the surroundings per cycle, and the “2nd-harmonic-based” methods were considered. It was found that for the material analyzed, all the considered energy-based approaches provided a very good engineering estimation of the material fatigue limit compared to a staircase test.

Fatigue limit assessment of a 6061 aluminum alloy based on infrared thermography and steady ratcheting effect

2020 ◽  
Vol 27 (9) ◽  
pp. 1301-1308
Author(s):  
Ru-yi Feng ◽  
Wen-xian Wang ◽  
Zhi-feng Yan ◽  
Deng-hui Wang ◽  
Shi-peng Wan ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Limit ◽  
Infrared Thermography ◽  
6061 Aluminum Alloy

Rapid Determination of Enantiomeric Excess Using Infrared Thermography

2002 ◽  
Vol 6 (4) ◽  
pp. 463-470 ◽  
Author(s):  
Nicolas Millot ◽  
Phil Borman ◽  
Mike S. Anson ◽  
Ian B. Campbell ◽  
Simon J. F. Macdonald ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Rapid Determination ◽  
Enantiomeric Excess

scholarly journals Porosity Distribution in Composite Structures with Infrared Thermography

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Cinzia Toscano ◽  
Carosena Meola ◽  
Giovanni Maria Carlomagno
Keyword(s):  
Infrared Thermography ◽  
Significant Variation ◽  
Composite Structures ◽  
Weight Ratio ◽  
Metal Foams ◽  
Manufacturing Processes ◽  
Lock In ◽  
Destructive Methods ◽  
Production Part

Composite structures are increasingly used in the transport industry especially in the aeronautical sector thanks to their favorable strength-to-weight ratio with respect to metals. However, this is true if the final part is defects free and complies with quality requirements. A main weakness in composites is porosity, which is likely to be introduced during manufacturing processes and which may knock down the material characteristics affecting its performance in service. Porosity plays a key role in sandwich structures, which involve novel metal foams as core, since the foam performance strongly depends on size and distribution of pores. The determination of porosity is mostly attained by destructive methods, which supply only a general indication linked to the production part number. Conversely, composites may entail local significant variation of porosity, which may be discovered only with effective nondestructive techniques. The attention of the present work is focused on the possibility to use infrared thermography to get information about the amount and distribution of porosity. In particular, two techniques: flash thermography and lock-in thermography are used to comply with requirements of both monolithic composites and metal foams.

Sign in / Sign up

Export Citation Format

Share Document