Debris development in fretting contacts – Debris particles and debris beds

Abstract

Response to reviewers' commentsWe would like to thank the reviewers and the editor for their input on the paper, and for the opportunity to make minor revisions to the text. We appreciate both reviewers' positive comments regarding the overall content of the paper, and have implemented the sole change recommended which is summarised below:We are familiar with the work of Arnaud and Fouvry et al., whose recent work on debris the reviewer has identified as being relevant to the present work. Of the papers we have identified by these authors there is one paper in particular that we have deemed to be of particular relevance, and have therefore made reference to the contribution of this work to the understanding of contact oxygenation in the discussion section of the revised manuscript. Reference has also been made to the work of Warmuth et al. which is cited in the aforementioned paper and that we consider to also be highly relevant to the subject of contact oxygenation and the formation of metallic wear debris.The original text from the reviewer is in standard font, whilst our responses are in italics. Revisions to the manuscript are highlighted. Reviewers' commentsReviewer #1: Very nice work and paper. One comment -Please refer to and discuss, as appropriate, the recent work on debris by Arnaud and Fouvry et al.Response : We are grateful to the reviewer for their recommendation -we are familiar with the work of Arnaud and Fouvry et al., and have identified one paper as being of particular relevance to the present work. As such, we have made a note to this effect in the discussion section of the revised manuscript."An increase in metal-metal contact as a result of increased contact conformity in fretting of steels was observed by Warmuth et al. [26], with the authors attributing the effect to restricted oxygen access to the contact inhibiting the formation of oxide debris, with recent work by Fouvry et al. [27] noting a similar phenomenon in fretting of titanium contacts, relating the effect not only to contact size but other sliding conditions affecting contact oxygenation." (Section 4, page 8) Reviewer #2: The present study investigates the role of fretting contact parameters on the formation of third body wear debris and subsequent surface transformation / debris particle beds for steelsteel contacts. The conclusions presented are well thought out and supported by the data which has

Modelling adhesive wear extension in fretting interfaces: An advection-dispersion-reaction contact oxygenation approach

“…However, several studies demonstrated that debris particles formed in steel alloys have a size ranging from 0.01 to 1 µm [17,[42][43][44][45][46] and some others reported a size ranging from 1 to 10 µm [47,48]. By combining the current SEM observations (Fig.…”

Modeling contact size effect on fretting wear: a combined contact oxygenation - third body approach

“…Fretting-induced damage is a widespread problem that manifests itself in a wide range of industrial applications ranging from cables and riveted connections in civil engineering contacts to blade/disk assemblies in aeronautics [3,4]. Many efforts were made during the past decades to investigate how the contact loading conditions such as the normal force, frequency, sliding amplitude, contact size, ambient and temperature conditions could influence fretting wear [5][6][7][8][9][10][11][12].…”

The evolution of subsurface micro-structure and tribo-chemical processes in cocrmo-ti6al4v fretting-corrosion contacts: What lies at and below the surface?

“…The links between wear (i.e. in this case purely a physical process) and dissipated energy have been clearly shown in the literature for fretting contacts [10,28,[32][33][34]. Similarly, the links to corrosion and its synergies during tribocorrosion have been quantified in recent work for fretting-corrosion contacts in simulated biological environments [35][36][37].…”