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"The shipbuilding industry is currently operating in a state of intense market competition. In order to compete in the global market, shipbuilders must produce ships that are more efficient and which can be constructed in a relatively short turnaround time between order placement and delivery. This necessitates the development of new methods such as the building of series of ships, design optimization, and the modularization concept. This paper presents a design optimization approach based on the modularization concept for engine room design. The proposed method focuses on the following characteristics: piping systems, employed in multiple bulk carrier-series ships, of different sizes. Consideration is given to the cost and weight of these systems and the similarity and common features of the modules and arrangements concerned. The piping system design process is divided into two stages—module definition and arrangement design. A design structure matrix is adopted to define an effective module that could be employed for use in the design of various series of ships. An optimization system has been developed for use in the arrangement design stage. It uses a genetic algorithm to obtain a similar pattern for module arrangement in various series of ships, with specific consideration extended to cost and similarity. The details of the proposed method are discussed in this paper. In addition, the paper discusses the piping system design of an actual ship by using the proposed method and evaluates its effectiveness."

"Dalam men-desain sesuatu, seringkali terdapat tujuan dan kendala yang berbeda. Sangatlah sulit untuk membuat desain yang kompleks hanya dengan menggunakan kertas dan pena dikarenakan terdapat beberapa model desain yang lebih baik dimodelkan secara desain kompleks yang bersifat deskriptif, walaupun terdapat beberapa model yang dapat dengan mudah dijelaskan secara matematis. Pada skripsi ini, dijelaskan tentang metode yang berbasis Design Structure Matrix (DSM) yang digunakan untuk optimasi desain module. Skripsi ini memberikan pendekatan baru untuk desain ruang mesin menggunakan konsep modularisasi dengan konsiderasi kapal seri. Karakteristik dari metode yang diajukan ialah: memperhatikan sistem perpipaan dari kapal seri dengan ukuran yang berbeda. Lalu biaya dan bobot dari sistem perpipaan tersebut, yang terakhir dipertimbangkan kesamaan dan umum dari kapal tersebut. Dalam menghasilkan module yang efektif dan dapat digunakan pada berbagai macam kapal yang berbeda, metode design structure matrix digunakan. Modularisasi dibagi menjadi 2 poin penting: module opsional dan module umum. Dalam hal ini, algoritma secara genetic digunakan untuk menyusun module yang telah di optimasi. Dengan tambahan, tes simulasi dari desain yang telah dioptimasi dari beberapa sistem perpipaan dibahas kembali untuk mengilustrasikan prosedur dari megoptimasikan sebuah desain dan menguji keefektifan dari metodologi yang telah diajukan dalam skripsi ini"

"Modularization is one of the key strategies for increasing responsiveness to customers. In modular product architecture a wide variety of product configurations can be generated by altering a limited number of modules and components. Product modules are identified by grouping highly coupled components in the same module. A Design Structure Matrix (DSM) is a compact presentation of the interaction between the components. In this paper, Analytical Hierarchy Process (AHP) and Genetic Algorithm (GA)-based methodology is proposed for the clustering of highly coupled DSM components in modules. Multi-criteria DSMs are proposed, which are aggregated by using weights generated by AHP. A genetic algorithm is designed to change the order of components in DSM and to bring highly coupled interactions near the diagonal. An illustrative case study is also made to validate the proposed algorithm. Two large sized and two small size modules are identified by selecting high density clusters around the diagonal. The clustered DSM also shows independent components and loose coupling between the two modules."