This study aimed to evaluate the effect of elevated temperatures on bond-slip behavior hooked-end steel fibers. A total 180 pullout specimens were tested in post-cooling conditions using a double-sided test with multiple embedded fibers for target between 25 and 750 °C. Results proved that bond strength significantly increases up 450 °C, drastically decreases 600 The contribution hooks reduced ...

In the present work, multiwalled carbon nanotube (MWNT) reinforced UHMWPE composite films were prepared by electrostatic spraying followed by consolidation. X-ray diffraction and differential scanning calorimetry studies showed a decrease in the crystallinity of UHMWPE due to the nature of the fabrication process as well as addition of MWNT. Tensile test showed an 82% increase in the Young’s mo...

Due to the assumption of uniform bond stress, development length fibre reinforced polymer (FRP) bars by design standards can be unnecessarily long and difficult provide in practice. Hence, stress distribution required a glass (GFRP) rebar is investigated. Four beam-bond specimens, two following RILEM specifications based on procedure ACI are tested evaluate effect test method strength. Ten pull...

BACKGROUND In sum, 1-, 2-, and 4-stranded allografts are used for soft tissue anterior cruciate ligament reconstruction; however, the fixation properties of fixation devices are not well assessed. HYPOTHESIS There are no differences in the biomechanical characteristics of 1 (Achilles)-, 2 (posterior tibialis)-, and 4 (semitendinosus)-stranded allograft tibial fixation. STUDY DESIGN Controll...

in this paper, dissimilar resistance spot welding of aisi 1075 eutectoid steel to aisi 201 stainless steel is investigated experimentally. for this purpose, the experiments are designed using response surface methodology and based on four-factor, five-level central composite design. the effects of process parameters such as welding current, welding time, cooling time and electrode force are inv...

A finite element (FE) model is developed to investigate mode I delamination toughness of z-pin reinforced composite laminates. The z-pin pullout process is simulated by the deformation of a set of non-linear springs. A critical crack opening displacement (COD) criterion is used to simulate crack growth in a double-cantilever-beam (DCB) made of z-pinned laminates. The toughness of the structure ...

Open Access-This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the source is credited. Background and purpose — Due to the known drawbacks of metal implants, new biomaterials for internal fracture fixation are attracting increasing interest, among them p...

This paper presents the results of an experiment study and suggests a theoretical formulation for bond behavior reinforced fly ash-based geopolymer concrete. Three grades (20 MPa, 30 MPa 40 MPa) concrete along with three reinforcement diameters (12, 16, 20 mm) were selected experimental work. The is determined using pullout test, finite element analysis (FEA), test data indicated that strength ...

The subsea anchor piles of offshore wind power floating platform structures are mainly subjected to uplift and horizontal loads, this paper focuses on the case loads. A three-dimensional numerical simulation study pullout characteristics suction in clay layers was carried out reveal movement state during pile pullout, range depth at point where is achieved (referred as range), relationship betw...