One of the main challenges in joining multi-material components is assessment nature and magnitude residual stresses developing adhesive bond during heat curing manufacturing process. Numerical modeling these can provide insights for making informed decisions related to (i) material substrate properties; (ii) properties i.e., low, medium, or high stiffness; (iii) bondline geometry width bead th...

To attach to surfaces in the sea, sea stars produce proteinaceous adhesive secretions. Sfp1 is a major constituent of this adhesive, where it present form four subunits (named Sfp1? ?) displaying specific protein-, carbohydrate- and metal-binding domains. Recently, two recombinant proteins inspired from have been produced: one corresponding C-terminal part Sfp1? other full-length Sfp1?. Adsorpt...

In the present work, a recently extended version of method dimensionality reduction (MDR) for layered elastic media is applied first time using semi-analytical approach. It based on priori knowledge cylindrical flat punch solution which determined numerically boundary element (BEM). We consider arbitrary indenters revolution producing circular area contact with bonded and unbonded layers thickn...

Adhesive and cohesive properties play a vital role in the durability of asphalt mixtures. As result lack models characterizing adhesive cracking, occurrence failure has not been fully formulated by using an explicit mechanical approach. Strain energy density intact mastics is transformed into surface energies as cracks initiate. This study developed energy-based crack initiation criterion based...

Whole-spacecraft launch-vibration isolation systems are attractive for achieving the goal of better, faster, cheaper, and lighter small satellites by reducing design-load vibration-test specifications on-board components. In this study, a three-axis passive system, based on superelastic shape memory alloy (SMA) technology, was developed to significantly attenuate dynamic launch loads transmitte...

Nonlinear rheological properties are often relevant in understanding the response of a material to its intended environment. For example, many gastropods crawl on a thin layer of pedal mucus using a technique called adhesive locomotion, in which the gel structure is periodically ruptured and reformed. We present a mechanical model that captures the key features of this process and suggests that...

Sticky viscous prey capture threads retain insects that strike araneoid orb-webs. The threads' two axial fibers support a series of glue droplets, each featuring a core of adhesive viscoelastic glycoprotein covered by an aqueous solution. After sticking, the glue extends, summing the adhesion of multiple droplets, and dissipates some of the energy of a struggling prey. As a day progresses, thre...

Bacterial biofilms are responsible for the majority of all microbial infections and have profound impact on industrial and geochemical processes. While many studies documented phenotypic differentiation and gene regulation of biofilms, the importance of their structural and mechanical properties is poorly understood. Here we investigate how changes in lipopolysaccharide (LPS) core capping in Ps...

Nanocomposite pressure-sensitive adhesives (PSAs) composed of polyurethane (PU)/(meth)acrylates reinforced with MoS2 nanoplatelets were prepared by blending aqueous dispersions. MoS2 crystals were exfoliated by sonication in water in the presence of poly(vinylpyrrolidone) (PVP, molecular weight of 10,000 g mol(-1)) to prepare an aqueous dispersion. Waterborne colloidal polymer particles (latex)...