English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A new formulation for an adhesive force and the penetration depth of an indenter considering surface stresses is presented using the minimum of free energy in the present paper. Surface stresses, are originated from surface energy, are related with a reconstruction of surface atoms. Contact pressure in an adhesion is derived analytically by simplifying the exact formulation of integral equation for the contact pressure. The adhesive force in the present theory includes that of JKR theory, and the method for deducing the relationship between the adhesive force and the penetration depth of the indenter is applied easily for deducing that with a different profile. Surface stresses influence upon the adhesive force just before the detachment between the indenter and a substrate. The adhesive force in the theory is compared with the experiment conducted by the other researchers, and both are well agreed with each other. The formulation for adhesive force and the penetration depth of the indenter in case where the adhesion area is relatively large with the size of the indenter is newly deduced, and the radius of adhesion area estimated by the theory is compared with Rimai's experiment. Both are well agreed with the experimental results.

Contact and Adhesion Analysis Considering a Variation of Surface Stresses (2nd Report, A Comparison of The Present Theory and JKR Theory)