Acoustic signature identification of damage and wear mechanisms in a steel/glass sliding contact

2021 ◽  
pp. 135065012110405
Author(s):  
Khouloud Jlaiel ◽  
Malik Yahiaoui ◽  
Jean-Yves Paris ◽  
Jean Denape
Keyword(s):  
Acoustic Emission ◽  
Wear Mechanisms ◽  
Interfacial Layer ◽  
Tribological Behavior ◽  
Vision System ◽  
Glass Ball ◽  
Acoustic Signature ◽  
Friction Measurements ◽  
Flat Contact ◽  
Emission Device

The tribological behavior of a steel/glass ball-on-flat contact was studied by synchronizing the friction measurements with an acoustic emission device and a vision system. The results highlight two distinct friction regimes identified with low and high friction values. Their transition is characterized by a modification of acoustic emission signals. In addition, two main damage and wear mechanisms are identified: the creation and propagation of Hertzian cracks visible on the glass surface and the constitution of an interfacial layer of debris. The different accommodation mechanisms, activated successively or simultaneously, are identified for acoustic emission frequencies between 300 and 700 kHz. Eventually, this approach allows a real-time wear mechanisms identification and gives better insights about acoustic emission signals in relation to tribological systems.

Failure analysis using online acoustic emission and tribological behavior of Al6061-Al2O3 nano composite

2019 ◽  
Vol 6 (12) ◽  
pp. 125096
Author(s):  
I Manivannan ◽  
S Ranganathan ◽  
S Suresh ◽  
P Philomen-D-Anand Raj
Keyword(s):  
Acoustic Emission ◽  
Failure Analysis ◽  
Tribological Behavior ◽  
Nano Composite

Acoustic Emission as Analyzing Tool for Wear Mechanisms of Composite Materials

2007 ◽  
pp. 2193-2196
Author(s):  
Jan Quintelier ◽  
Joris Degrieck ◽  
Pieter Samyn ◽  
Wim De Waele ◽  
Georgios Kalogiannakis ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Composite Materials ◽  
Wear Mechanisms

Wear Mechanism and Modeling of Tribological Behavior of Polycrystalline Diamond Tools When Cutting Ti6Al4V

2018 ◽  
Vol 140 (12) ◽  
Author(s):  
Guangxian Li ◽  
Shuang Yi ◽  
Cuie Wen ◽  
Songlin Ding
Keyword(s):  
Transition Zone ◽  
Wear Mechanisms ◽  
Tribological Behavior ◽  
Theoretical Calculations ◽  
Cutting Speed ◽  
Polycrystalline Diamond ◽  
Analytical Models ◽  
Workpiece Material ◽  
Pcd Tools ◽  
Sliding Zone

Owing to its outstanding physical and mechanical properties, polycrystalline diamond (PCD) is ideal for cutting titanium alloys. However, the high temperature and stress caused by the interaction of tool surface and chip flow lead to different types of wear. This paper investigates the wear mechanisms of PCD tools in three different tribological regions: sticking zone, transition zone, and sliding zone, when machining titanium alloy Ti6Al4V. The tribological behavior of PCD tools in the wear processes were analyzed through both experiments and theoretical calculations. Analytical models of stresses and temperature distribution were developed and validated by turning experiments. PCD tools, consisting of diamond grains of different sizes: CTB002 (2 μm), CTB010 (10 μm), and CTM302 (2–30 μm), were used to cut Ti6Al4V at the normal cutting speed of 160 m/min and high cutting speed 240 m/min. It was found that adhesion, abrasion and diffusion dominated the wear process of PCD tools in different worn regions. Microscopic characters showed that the wear mechanisms were different in the three tribological regions, which was affected by the distribution of stresses and temperature. “Sticking” of workpiece material was obvious on the cutting edge, abrasion was severe in the transition zone, and adhesion was significant in the sliding zone. The shapes and morphological characters in different worn regions were affected by the stresses distribution and the types of PCD materials.

A new approach for detection of wear mechanisms and determination of tool life in turning using acoustic emission

2015 ◽  
Vol 92 ◽  
pp. 519-532 ◽  
Author(s):  
Luis Henrique Andrade Maia ◽  
Alexandre Mendes Abrao ◽  
Wander Luiz Vasconcelos ◽  
Wisley Falco Sales ◽  
Alisson Rocha Machado
Keyword(s):  
Acoustic Emission ◽  
Tool Life ◽  
Wear Mechanisms ◽  
New Approach

Acoustic Emission Based Tool Wear Condition Monitoring While Turning Nimonic C-263 Alloy Using PVD Coated Carbide Insert

2013 ◽  
Author(s):  
V. S. Senthil Kumar ◽  
C. Ezilarasan ◽  
A. Velayudham
Keyword(s):  
Acoustic Emission ◽  
Tool Wear ◽  
Wear Mechanisms ◽  
Gas Turbines ◽  
Cutting Conditions ◽  
Tool Wear Mechanisms ◽  
Cutting Velocity ◽  
Coated Carbide ◽  
Carbide Insert ◽  
Super Alloy

Due to its ability to resist thermal fatigue and creep resistance at higher temperature, nimonic C-263 super alloy is frequently applied in the hot combustion chamber of gas turbines. By virtue of the above they induce tool wear while machining which seriously affect the life of the component, and it is a serious concern, since it is used in critical applications. To monitor the status of the tool condition, several sensors are utilised, of which acoustic emission is most widely used due to its nature of generation phenomenon. In this paper PVD coated carbide insert is utilised to conduct tool wear study through turning of nimonic C-263 super alloy. The experiments were performed at different combinations of cutting conditions. The life of the cutting tool at different cutting conditions and the tool wear mechanisms were analysed. Results revealed that acoustic signal predict the condition well and that cutting velocity play a major role in the tool wear progression. Abrasion, micro chipping and plastic deformation are observed to be the major tool wear mechanisms.

scholarly journals Application of New Techniques of Signal Processing for Detection of Wear Mechanisms in Turning of AISI 4340 Using Acoustic Emission

2021 ◽  
Author(s):  
Luis Henrique Andrade Maia ◽  
Alexandre Mendes Abrão ◽  
Wander Luiz Vasconcelos ◽  
Jánes Landre Júnior ◽  
Álisson Rocha Machado ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Wear Mechanisms ◽  
Tensile Tests ◽  
Machining Process ◽  
Fracture Mechanisms ◽  
Steel Turning ◽  
Short Time ◽  
Coated Carbide ◽  
Ae Signals ◽  
Aisi 4340

Abstract In this study, the short-time Fourier transform (STFT) technique was used to determine the wear mechanisms acting on uncoated and AlCrN-coated carbide tools and their variations during the machining process. To this end, tensile tests were performed on hardened AISI 4340 steel to characterize the acoustic emission (AE) signals and subsequently isolate the steel deformation and fracture mechanisms from the signs of tool wear during the steel turning. Machining tests were carried out using the following parameters: cutting speeds of 150, 200 and 250 m/min and feed rates of 0.10 and 0.20 mm/rev. The results demonstrate that AE signals in conjunction with STFT analysis can be used to identify abrasive wear, adhesive wear and other phenomena that occur during cutting.

Study on Tribological Behavior and Mechanisms of Weldox960 Steel

2011 ◽  
Vol 415-417 ◽  
pp. 2191-2195
Author(s):  
Ye Fa Tan ◽  
Bin Cai ◽  
Long He ◽  
Sheng Qiang Hao ◽  
Hua Tan ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Abrasive Wear ◽  
Work Hardening ◽  
Wear Mechanisms ◽  
Sliding Friction ◽  
Tribological Behavior ◽  
Critical Value ◽  
Dry Sliding ◽  
Wear Rates ◽  
Oxidation Wear

Weldox960 steel is widely used in mechanical structure of military equipments as anti-wear parts. The tribological behavior and mechanisms of weldox960 steel were investigated under dry sliding friction conditions. The results show that friction coefficient of the steel increases from 0.268 to 0.365 with the increase of load. When the loads are smaller than 8N, the wear rates of the steel are in the range of 0.57~0.67×10-3 mm3/m, and the wear mechanism is multi-plastic deformation wear. If the loads are bigger than 10N, the wear rates increase to the range of 1.29~1.43×10-3 mm3/m, and the wear mechanisms change into delamination of the work-hardening layer and abrasive wear. The friction coefficients keep in a steady state of about 0.31 when the sliding speeds change from 0.05m/s to 0.2m/s. At the low speeds of 0.05m/s and 0.1 m/s, the wear rates are in the range of 1~1.3×10-3 mm3/m and the wear mechanisms are multi-deformation wear and abrasive wear. When the sliding speed increases to a critical value of 0.15m/s, the wear rates increase to 6.2×10-3 mm3/m and the wear mechanisms change into fatigue delamination of the work-hardening layer and multi-plastic deformation wear as well as oxidation wear.

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