Rancangan Tata Letak Fasilitas Produksi Produk Rehabilitasi Dengan Algoritma Genetika

The layout of production facilities has a very important impact and interrelationship between facilities with each other to support the smoothness of the production process.Frequently the biggest problems in the production system are caused by unsystematic handling of materials. This study, applies a genetic algorithm to obtain a facility layout design (machine) optimally. Inputs from this study include machine numbers, machine dimensions, machine sequences in each section, production volume in each section, and flow frequency in each section. The output of this study is the machine layout with a minimum total flow cost. This study solved the case in the rehab product production facility at PT Shima Prima Utama which consisting of 16 machines and 29 components. The results of the study in this case are that the optimal machine placement sequence is 13, 3, 9, 15, 6, 10, 2, 12, 8, 16, 7, 1, 11, 5, 14 and 4 with a total flow cost of 197,434.

Solving the Problem of Minimizing the Total Cost in the Integrated Planning of Production and Distribution in a Supply Chain Using Meta-Heuristic Algorithm

In this paper, a concurrent planning of production and distribution is considered for manufacturers. In the production section production machines with a specific capacity that has the possibility of process multiple tasks simultaneously are intended and the tasks have the desired size and processing time and the overall size of the tasks within each category does not exceed the capacity of the machine. Also in distribution section the vehicles have specified capacity. In this study, by using meta-heuristic Genetics Algorithm the production problem is solved and in genetic algorithms to obtain better solutions help operators crossover and mutation has been taken. Results show that by increasing the size of the issue of genetic algorithms nearly optimum solutions and provides a shorter running time.

Research on Virtual Manufacturing of Chain Rolling Cold Bend Section Steel Model

Cold bend section forming is generally completed by multi roll pass. The whole rolling process form chain structure. Applying virtual manufacturing technology to cold bend section production field is a new concept. Aiming at the chain of the specific conditions of the rolling process, the paper studies the application of virtual manufacturing technology implementation method and puts forward a new concept and technical measures.

CHARGE INFLUENCE ON MINI BLACK HOLE'S CROSS SECTION

In this work we study the electric charge effect on the cross section production of charged mini black holes (MBH) in accelerators. We analyze the charged MBH solution using the fat brane approximation in the context of the ADD model. The maximum charge–mass ratio condition for the existence of a horizon radius is discussed. We show that the electric charge causes a decrease in this radius and, consequently, in the cross section. This reduction is negligible for protons and light-ions but can be important for heavy-ions.

Scanned-Probe Microscopy of Elastomer Blends: Morphology and Mechanical Properties

Scanned-probe microscopy (SPM) has found application to a variety of polymer systems, primarily for the examination of surface morphology and the assessment of surface properties. In fact, SPM is unique in its ability to probe both phase morphology and mechanical properties simultaneously. The examination of industrial elastomers and their blends by SPM techniques can provide morphological information historically obtained only by transmission-electron microscopy (TEM). Since contrast with the SPM can be generated by differences in mechanical response of the constituent phases, polymer blends which are difficult to etch or stain for TEM can be successfully examined. In many cases measurements of polymer morphology can be made more easily with SPM, since time-consuming steps associated with thin-section production and staining are not required. Contact and tapping-mode operation along with force modulation and phase measurement can be used to examine phase microstructure, phase morphology, filler type, filler distribution, and viscoelastic response in elastomer systems.