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[Display omitted] • It established a cement-prosthesis stem debonding experiment to analyze the initial damage process of the interfacial adhesion and explored the relationship between the inter-facial adhesion stress and slip. • In terms of nondestructive testing technology detect damage of stem surface and inner bone cement, micro-morphology and micro-pores and micro-cracks and annular damage belts have been assessed and analyzed. The initial interface debonding damage behavior of cemented hip arthroplasty was simulated and investigated through the push-in experiment. A series of nondestructive testing techniques were carried out to detect damage to the stem-cement interface and cement. Results suggested that the initial stem-cement interface debonding and cement damage were induced at femur loading early period. The cement was subjected to a combination action of shear stress and bending from a sinking stem causing a pressure-arch effect resulting in compression creep and micro-crack on the cement successively. The stem-cement interfacial friction prevent stem from sinking due to the internal shear effect caused by the cement-stem interface micro-sliding. The interface debonding procession increased at first and then became stable, which was shown in cement's creep deformation-friction-fracture model. The initial micro-cracks released damage energy which was converted into stress waves. Further, the relationship of bond stress and slippage at different locations caused different degrees of damage belt for the interface and cement. It was concluded that the combination effect of pressure arching and shear lag was the primary reason for cement's initial damage and the matrix defect affected the failure progress. [ABSTRACT FROM AUTHOR]

Fabrication of surfaces with capability of repelling both water and oil is badly needed. Meanwhile, the widespread use of nanomaterials has also attracted great interest in this field. In this paper, we provided novel methods to synthesize nano amorphous tungsten oxide coatings on Al-Mg metals. After modification with FAS-17, the surface could obtain excellent superamphiphobic abilities with lower sliding angles and higher contact angles to water and oil. In addition, outstanding anti-oil pollutant and low adhesion were obtained. Furthermore, the as-prepared superamphiphobic surfaces could survive 200 cm abrasion distance under 19.6 kPa pressure on 1000 grid SiC sandpaper. It should be noted that this coatings could obtain different colors in different temperature. Meanwhile, we found that the droplets with lower surface energy and low viscosity are easier to bounce than the droplets with high surface energy and high viscosity. So the simple procedure and excellent superamphiphobicity about fabricating colorful tungsten oxide coatings have great potential in protecting Al-Mg metal and have potential applied in signals which need to prevent wetting or pollution by water and oils. On one level, this method about synthesizing nano amorphous tungsten oxide also has more promising using in other fields. [ABSTRACT FROM AUTHOR]