Tribolumen: A Tribometer for A Correlation Between AE Signals and Observation of Tribological Process in Real-Time—Application to A Dry Steel/Glass Reciprocating Sliding Contact

Abstract

This paper deals with the development of an original apparatus called TRIBOLUMEN designed specifically for friction experiments on transparent materials. The friction measurement is synchronized with an acoustic emission (AE) sensor and the device is also equipped with a high-speed camera offering a direct view at the interface to gain a deeper understanding of tribological mechanisms. The TRIBOLUMEN device is in ball-on-flat contact configuration with a range of strokes from 5 to 500 µm and an oscillation frequency from 5 to 600 Hz. The experiments showed that this device has an adequate rigidity and can detect subtle friction modifications of the oscillating contacts. The observation of a steel-on-glass contact in real-time highlighted the initiation of Hertzian cracks followed by the formation of debris in the contact. Using the synchronous measurement, these mechanisms were clearly associated with different stages in the friction measurement and in the AE signals, which permitted to identify the AE signature of Hertzian cracks.

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

“…The Tribolumen tribometer used in this study allows simulating the fretting phenomena and reciprocating sliding close to fretting conditions on transparent materials. 12 This apparatus ensures the contact between a soda-lime glass sample and a 100Cr6 steel ball (AISI 52100, 6 mm in diameter, 0.015 ± 0.005 µm of average roughness) in a ball-on-flat configuration. The dry friction test was carried out under pure sliding conditions with an imposed stroke of 100 µm (i.e.…”

“…Recently, Haas et al 11 identified distinctive AE frequency ranges in plowing and cutting events. Also, Jlaiel et al 12 observed a change in the AE signals associated with low friction, Hertzian cracks formation, and third body formation. Regarding the frequency band, a correlation map for the AE frequency band of several tribological phenomena has been established by Hase et al 13 based on a literature review.…”

A review of advances in tribology in 2020–2021

“…The influence of pressure, elastic modulus, and surface topographies on lubricating film were analyzed. Jlaiel et al [2] established the correlation between acoustic emission signals and elementary tribological mechanisms by an apparatus, equipping with highspeed camera, acoustic emission acquisition system, and force sensors, on transparent materials in ballon-flat contact. Buse et al [3] revealed lubricating mechanisms of the calcium hydroxide which can avoid the fretting wear by using a new time-lapse animation visualization technique.…”

Plastic behavior-dependent weldability of heat-treatable aluminum alloys in friction stir welding

“…8). The absolute energy is obtained by integrating over the entire burst duration the squared voltage signal [33]. The centroid frequency represents the frequency center mass of AE signals and characterizes the overall frequency content of an acoustic emission signal [34].…”