Design for Maintainability ... vehicle breaks down, on the tarmac in the case of an aircraft, or at the coalface in the case of mining equipment. Redesign for flexibility and maintainability: a case study. Servicing … Other Mechanical Engineering Commons, Home | Out of them 56 were graded as significant by 33 experienced facility managers based on frequency of occurrence and their adverse effect on: economy, system performance, environment and health. Barlow, Thomas, "Design for Maintainability in Developing Communities—A Case Study on the Uros Islands" (2018). Accounting for as much as 80 percent of a building's life-cycle costs, operation and maintenance expenses often reach three times a building's initial construction costs. In most cases, though, a structured basis of measure is rarely used against which designs, or design alternatives, should be reviewed. We analyze its arch itecture and use . 58 0 obj 38 0 obj endobj <> this research is to assess the universality of these maintainability principles for design in developing communities and determine any modifications or gaps that exist. 54 0 obj Keep the design simple is difficult, and the payoff is fewer parts, fewer tools, less complexity, and organization needed to conduct maintenance (which screw goes where? <>/Metadata 2 0 R/Outlines 5 0 R/Pages 3 0 R/StructTreeRoot 6 0 R/Type/Catalog/ViewerPreferences<>>> a. Thomas Barlow Design of Experiments (DOE) provides a methodology to create organized test plans to identify important variables, to estimate their effect on a certain product characteristic and to optimize the settings of these variables to improve the design robustness. Abstract . Minimize spare parts inventory is just one benefit. This novel system predicts the probability of defects when the state of the root nodes are given. Such principles include: simplicity, diagnosability, standardization of parts, modular subassemblies, minimizing assembly and disassembly parts, labeling components, increased life of moving parts, manuals, and simplifying tools needed for repairs [1]–[3]. <>3]/P 6 0 R/Pg 43 0 R/S/Link>> 2 0 obj %PDF-1.7 %���� design. 43. ~�g0�1��lO��+�ы�7�X� �\4�h�U�}w �hC�_����p_���s��J���zn��(A�r�y�@��*X8PЕJ�Ah֞j��5��?|������xL��T�A�ctU� ��E���0Vݥ��9�95I��etG�.��q�ܖyE�@I�V�S��H�A�Q�S��U r�UC Equipment design for maintenance shall consider IVA as the prime resource; maintenance by EVA shall be contingency only. 9 0 obj (�V��8G,�VPDin�"���_��3,(^*ɣ/��$a�`c�������/�-�1X�O�4o7��18d�q�֟�x�^q,����P�hUNs��()���S�)��d If the design fulfills its basic function and, by doing so, simply continues to stand, people who mourned the failure of its predecessor and witnessed the suffering of some connected tragedy will be content. endstream endobj uuid:21b093e2-affb-11b2-0a00-801da043fc7f endobj However, there is currently no systematic analysis of the diversified DfM-related issues and research. Maintainability is assessed through the use of change scenarios. We analyze its architecture and use common design principles to identify critical changes in order to improve its flexibility with respect to a set of planned extensions. study in building design for maintainability, defined it as “the condition of an item or a surface that permits its repair, adjustment or cleaning with reasonable effort and cost”. https://scholarsarchive.byu.edu/studentpub_uht/43, Applied Mechanics Commons, �(���H�ʥ�����^rH�CS�S m�ř;�n���B�w�!-�W����bB�&���!m��Z�l=��A�+�$|ʸo`M�wMuFW����L���2�*�W��4��1QKm�h6�)ܳ;Ar,���dzE�e:��~�٤���|B�z"���H��VXX��|8(� ���$�e�z�Я������ӵ�-X�e�F7I�g�@,8e�Q���կ_��G� ����o��]�|��zA�Բj77���T��=�sF8]`Y�N�Wa�� �`#�9���A��tf�y�Bf-7�5�M�3P��{}m�+/�x���R��`�2��`b�To�U����e��u�+m�� WeXD�m��Y��(�rӱ���@-(�5�m�2B�s���[yK;3�_R�_��J� .�'���x[���9DD@�P'�2z���4a�UCn{��hȹ�g�6���>���Hw�2��8��>�-��Hp搧����K�M��}��K�I �=��ru@i��MT�i.Pp�9��L��z'��U� �U��=���ax7K�V뾾ﾰ0XNt�|�����l�~�*����O��A[��d\b�퐓#�7n�`��� Undergraduate Honors Theses <>30 0 R]/P 6 0 R/S/Link>> The aim of this research was to strengthen the knowledge base on high-rise vertical greenery facades in the tropics, leading to the formulation of case study-based ‘design for maintainability’ (DfM) guidelines. Undergraduate Honors Theses. My Account | Read More. Servicing requirements for stored equipment defined? 16 0 obj 12.3.1.1 General Maintainability Design Requirements {A} General requirements to be followed when designing for maintainability are presented below. Appligent AppendPDF Pro 6.3 �&�ڞ=A.QڗR�?0� |����֏��Č�[�1����(��{a��1������-��8�b�Z�O��7>����� I have listed below some considerations at each stage of a design process, that should enable a human factors engineer to assess accessibility and optimise the maintainability of a product: Pre-Concept Phase. Equipment in shipping cases passes through shop doors? @`�A0)�=�;O��q2&A[_����1r��tSZ�{ ��[��I��'[���D� This work extends the architecture of sensor based environmental information systems for maintainability, using road traffic control system as a case of study. <>25]/P 27 0 R/Pg 43 0 R/S/Link>> These guidelines will assist clients, designers … <>9]/P 23 0 R/Pg 43 0 R/S/Link>> These These guidelines will assist clients, designers and contractors by providing a supplemental reference • 2nd line maintenance occurs at a nearby maintenance depot. 31 0 obj This guides the software practitioners to manage the resources optimally. [42 0 R 45 0 R 46 0 R 48 0 R 49 0 R 50 0 R 51 0 R 52 0 R 53 0 R] <>/P 28 0 R/S/Link>> 3 0 obj Prince 12.5 (www.princexml.com) > Cultural Analysis Case Study: Implementation of Acquisition Reform within the Department of Defense; DAO Manual-Spec Writing (Draft) [as ZIP archive] DETAIL SPECIFICATION TECHNICAL DATA PACKAGES ; DETERMINING REQUIREMENTS AND SPECIFICATIONS OF ENTERPRISE INFORMATION SYSTEMS FOR PROFITABILITY; DEVELOPING ADVANCED SYSTEMS THINKING Evolutionary Design as a Means for … 1 endobj endobj 2020-12-03T18:51:32-08:00 Design for Maintainability in Developing Communities—A Case Study on the Uros Islands Article is made available in accordance with the publisher's policy and may be subject to US copyright law. A case study of a new low-cost water pump for Uros Islanders in Peru will be used to explore the practicality of the theory. We also discuss, how efficient code quality can be achieved with the Design Patterns. The aim of this research was to strengthen the knowledge base on high-rise vertical greenery facades in the tropics, leading to the formulation of case study-based ‘design for maintainability’ (DfM) guidelines. It is held that the computed conditional probability values can be generalized to the population because the output is an estimator based on sample buildings. endobj <> From the detailed case studies of five residential buildings in Singapore, a total of 113 defects were identified for ten major components of sanitary-plumbing system. 27 0 obj from anothe r party. <>stream It is obvious from many v. vi Preface examples of engineered installations that most of the problems stem from a lack of proper evaluationof theirengineering integrity. endobj These probability values can be used by the design teams as an indication of maintainability potential of their proposed design … Software maintainability prediction in the earlier stages of software development involves the construction of models for the accurate estimation of maintenance effort. <>15]/P 24 0 R/Pg 43 0 R/S/Link>> Author(s) Ackermann, Christopher; Lindvall, Mikael; Dennis, Gregory D. DownloadAckermann-2009-Redesign for flexibility and maintainability a case study.pdf (237.5Kb) PUBLISHER_POLICY. Home > endobj endobj endobj 40 0 obj But what if those costs could be alleviated - and performance optimized - by encouraging facility professionals to provide input during the design phase of the project? <>21]/P 26 0 R/Pg 43 0 R/S/Link>> 29 0 obj 43, Design for Maintainability in Developing Communities—A Case Study on the Uros Islands, Ira A. Fulton College of Engineering and Technology, Maintainability, Design, Low-Resource, Development. <>2]/P 18 0 R/Pg 43 0 R/S/Link>> endobj Redesign for Flexibility and Maintainability: A Case Study Abstract In this paper, we analyze software that we inherited from another party. There has been much written about these underlying assumptions in order to create a better framework for designing for developing communities. Design for Maintainability. FAQ | 35 0 obj The purpose of this research is to assess the universality of these maintainability principles for design in developing communities and determine any modifications or gaps that exist. conducts a quantitative study to assess the impact of design pattern on software maintainability. 39 0 obj It is appropriate to the replacement of small modular items that require a minimum kit of tools and can be replaced within minutes. Battery design for maintainability, ruggedness and safety. Using the measurement data of Li and Henry‟s study, Van Koten and Gray [16] defines a endobj Accessibility Statement. Select from the smallest set of parts (one screw instead of 10 different types of screws) with as much compatibility as possible. uuid:21b093df-affb-11b2-0a00-90b274020000 33 0 obj <> <> One unexplored, yet important area is the universality of common maintainability principles used in developed countries when designing products used in developing communities. There is a need for more empirical research based on the case studies to identify the impact of software The study shows that basic and well-established design concepts can be used to guide the design and redesign of software. Designing products for developing communities has exposed many of the underlying assumptions that engineers from developed nations have during the design process. <> A case study of a new low-cost water pump for Uros Islanders in Peru will be used to explore the practicality of the theory. 2020-12-03T18:51:32-08:00 f. Mobility provisions considered? The purpose of Reliability and Maintainability (R&M) engineering (Maintainability includes Built-In-Test (BIT)) is to influence system design in order to increase mission capability and availability and decrease logistics burden and cost over a system’s life cycle. <>13]/P 24 0 R/Pg 43 0 R/S/Link>> Case Studies Case studies take an in-depth look at a particular topic or situation. There has been much written about these underlying assumptions in order to create a better … g. Can the equipment be stored for extended periods of time without degrading effects? j. Within the DFR concept, we are mostly interested in the effect of stresses on our test units. To address these concerns, an instrumental case study approach was undertaken using a series of site investigations and interviews with experts and stakeholders. <>/MediaBox[0 0 612 792]/Parent 9 0 R/Resources<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/StructParents 0/Tabs/S/Type/Page>> Design For Maintainability: Mechanical Equipment Checklist 5 Yes Partly No i. A novel subsea design concept is offered as a case study to demonstrate the key changes in subsea design activities for addressing RAM with the proposed framework. We use Academic Information System of Institut Teknologi Sepuluh Nopember as a case study. The maintenance efficiency is measure based on maintainability index, which is derived based on several assembly criteria such as disassembly, assembly direction and tools used. <, Design for Maintainability in Developing Communities—A Case Study on the Uros Islands. 1 INTRODUCTION Reliability, availability, and maintainability (RAM) is concerned with the sustained capability of a … Design Patterns such as Observer, Facade, Command, Singleton, and Strategy are used to analyze maintainability and performance quantitatively. About | endobj system‟s maintainability during all the life-circle. �b�f�_m��aī�J���$��A@�R�tX4��~�d�̙u"��W��iq�Lh:��K;J�fе'{P�O�p�q���\B%��!x��ۨ��-�ܚ�e =��_���vI�a���Na�:e T�t6���SM{܀�Z*��zc�ڄ�A;!��^0�V;9�(����0��y]h`T%��X��~���L$��c��=>�K��t�B =�,g��S��&��u�DQ֒283d_v��;�j�� �5锒���ƨ%�A��8�T����X�JO�\�EXq¿ s��|7�{552��|��!�:������G�g�M�3�C3�]y��0�O� w�[OPe�} �������*,`��(�����(=:3:��g�NlF��c�?>þ��09Z� �! endobj 55 0 obj Agenda •Company Overview •Denchi Group Product Lines •Case Study 1: Armoured Vehicles •Case Study 2: Large Scale Battery. endobj AppendPDF Pro 6.3 Linux 64 bit Aug 30 2019 Library 15.0.4 the formulation of case study-based ‘ design for maintainability ’ (DfM) guidelines. 2020-12-03T18:51:32-08:00 5 0 obj Publisher Policy. <> ). endobj ... Redesign for Flexibility and Maintainability: A Case Study Ackermann, C., Lindvall, M., Dennis, G. Details; Contributors; Bibliography; Quotations; Similar ; Collections; Source . endobj 1 0 obj We perform refactoring into the existing systems using suitable PoEAA. application/pdf endobj This paper presents a case study in assessing the maintainability of a large, software intensive system. Ţ�_�H It is an enterprise software which has Anemic Domain Model. 19 0 obj Redesign for Flexibility and Maintainability: A Case Study . 1 Introduction Maintenance of computer-based systems can be extremely expensive, rivaling or even dwarfing the cost of original development. This resource page presents a methodology that links operations and maintenance goals to the design process, and how it can be applied to any organization. This study discussed the relationship between design for assembly and maintainability in order to remain product/system performance and at the same time to extend their life. A design for maintainability assessment of building systems is proposed. Li and Henry [15] conducted a case study on two industrial systems written in Ada, and found that software size is an important predictor for maintenance effort. endobj 43 0 obj Reliability & Maintainability (R&M) Engineering Overview. A case study of a new low-cost water pump for Uros Islanders in Peru will be used to explore the practicality of the theory. endstream Designing products for developing communities has exposed many of the underlying assumptions that engineers from developed nations have during the design process. endobj In this paper, we analyze software that we inherited. In some cases, maintainability involves a system of continuous improvement - learning from the past in order to improve the ability to maintain systems, or improve reliability of systems based on maintenance experience. This study aims at systematically reviewing the prediction models from January 1990 to October 2019 for predicting software maintainability. x��X�n�F}�W�� �h�%�Zv����� h. Special servicing requirements for stored equipment minimized? <>stream The techniques we used are described, and their strengths and weaknesses discussed. 6 0 obj In this webinar, Dr Sheila will share the research study which is the first comprehensive assessment to determine the green maintainability potential and performance of high-rise VGS in tropical conditions which lead to the formulation of case study-based ‘design for maintainability’ (DfM) guidelines. These case studies would demonstrate the usefulness of the methods and could also be used by process engineers to learn how to apply RAM principles in process design. To address these concerns, an instrumental case study approach was undertaken using a series of site investigations and interviews with experts and stakeholders. 36 0 obj The body of knowledge on design for maintainability (DfM) is increasing. 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