Complex composite parts, and especially curved laminated composites, are more subject to defects than flat laminates. One of the most common is presence wrinkles, which can occur in radius curvature. Wrinkle effects must be studied evaluate their influence on mechanical properties composites. In this study, a numerical model was developed take wrinkle local delamination into consideration asses...

An approach for the intelligent determination of the appeared wrinkles in the robotized handling of non-rigid materials such as fabrics is presented. A machine vision system reads the wrinkles and a robotic manipulator controller is used to eliminate the wrinkles of a fabric. The machine vision system is used in order to capture an image of the wrinkled or wrinkle-free fabric. The direction of ...

Wrinkle patterns in compressed thin sheets are ubiquitous in nature and technology, from the furrows on our foreheads to crinkly plant leaves, from ripples on plastic-wrapped objects to the protein film on milk. The current understanding of an elementary descriptor of wrinkles--their wavelength--is restricted to deformations that are parallel, spatially uniform, and nearly planar. However, most...

Graphene annulus possesses special wrinkling phenomenon with wide range of potential applications. Using molecular dynamics simulation, this study concerns the effect of boundary on the mechanical properties of circular and elliptical graphene annuli under circular shearing at inner edge. Both the wrinkle characteristic and torque capacity of annular graphene can be effectively tuned by outer b...

This paper presents a theory and practical computations for visual age classification from facial images. Currently, the theory has only been implemented to classify input images into one of three agegroups: babies, young adults, and senior adults. The computations are based on cranio-facial development theory and skin wrinkle analysis. In the implementation, primary features of the face are fo...

New geologic mapping reveals that Artemis, a unique 2400-km-diameter feature on Venus, is much larger than previously recognized, including a wide outer trough (>5000 km diameter), a radial dike swarm (12,000 km diameter), and a concentric wrinkle ridge suite (13,000 km diameter). Artemis’s evolution included formation of its interior and chasma, accompanied by lateral propagation of radial dik...

The wealth of data from recent missions to Mars, including images from the Mars Orbiter Camera (MOC) and Thermal Emission Imaging System (THEMIS) provides new insights into all aspects of Martian geology. High-resolution MOC and THEMIS images at Solis Planum reveal unprecedented detail of wrinkle ridge structures. In addition to confirming previous interpretations and revealing new structural c...

PURPOSE To evaluate the wrinkle-reducing effects of 4-MHz radiofrequency (RF) energy applied to human periorbital, frontal, and midface facial skin using clinical wrinkle grading, patient self-satisfaction survey, and limited histologic studies. METHODS Thirty-two patients, ranging from 29 to 71 years of age with skin types varying from class I to class III using the Fitzpatrick Wrinkle Class...

The complex morphologies observed in many biofilms play a critical role in the survival of these microbial communities. Recently, the formation of wrinkles has been the focus of many studies aimed at finding fundamental information on morphogenesis during development. While the underlying genetic mechanisms of wrinkling are not well-understood, recent discoveries have led to the counterintuitiv...

Skin aging is a multisystem degenerative process caused by several factors, such as, UV irradiation, stress, and smoke. Furthermore, wrinkle formation is a striking feature of photoaging and is associated with oxidative stress and inflammatory response. In the present study, we investigated whether caffeic acid, S-allyl cysteine, and uracil, which were isolated from garlic, modulate UVB-induced...