Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : push

Predicting the Strength of Fiber Reinforced High Performance Concrete Based on Push-Off Tests

Maha M.S. Ridha; Nagham T. Hamad; Kaiss F. Sarsam

Engineering and Technology Journal, 2012, Volume 30, Issue 7, Pages 1187-1202

This paper reports the results of an investigation into the strength of fiber reinforced high-performance concrete (FRHPC)based on push-off tests. Both experimental and analytical studies were performed. In the experimental study, eight FRHPC push-off specimens were tested. Two types of fibers, straight and hooked-end, in conjunction with percentage of volume fraction of steel fibers,0.5%, 1.0%, 1.5% and 2.0% were used. In the analytical study, a new proposed expression was derived based on experimental data in this research and available data from the literature. These include high strength concrete (HSC) with
compressive strength of 40 < f'c < 107 MPa. The investigated variables were, fibers factor (F), area of reinforcement perpendicular to shear plane (ρvfy), and concrete compressive strength (f'c). The proposed expression gave good prediction for the direct shear strength of the tested specimens-the proposed expression predicted the direct shear stress resistance of tested/calculated values with a coefficient of
variation (COV) of 12.88 percent.

Simulation and Application to Measure Comparable Performance of Push,Pull and Hybrid Manufacturing Systems

Nahidh Jaffar K; Hussein S. Ketan

Engineering and Technology Journal, 2009, Volume 27, Issue 3, Pages 600-623

In this paper we are going to integrate the most popular production systems nowadays
that is; push ,pull production system, ,then we compare the performance of the integrated
production model or the hybrid outcome system to push and pull, by introduce a technique that
optimizes production control of single product flow shop under the three production control
through using the production control framework. Evaluating a production control policy usually
requires simulation modelling due to the complex interaction that occur,a point was considered by
simulation package exploit. Then we demonstrate how this template can be used in conjuction
with this existing simulation software to find an optimal production control policy. Our decision
variables are location of the push-pull interface. An experemental research prototype of such
push, pull and hybrid control system has been constructed to emulate a motor production at real
world plant in which unit process and operational decisions are integrated. The simulation
software implemented to support the manufacturing system planning and its operational
control.the system configuration, modelling feature and its verification modelling, feature and its
verification through an application of the practical manufacturing line will be described.