The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform

Budi Susilo - One of the best experts on this subject based on the ideXlab platform.

  • Development of Maintenance-Reparation Guidance, and Material Specification for Green Building’s Electrical Component in Government Building Based on Work Breakdown Structure (WBS)
    IOP Conference Series: Materials Science and Engineering, 2018
    Co-Authors: Resha Mochamad Ilham, Yusuf Latief, Leni Sagita Riantini, Budi Susilo
    Abstract:

    Initial quality of building depands on quality of design and construction phase of the building, while maintenance and spare part quality keep the decline of the quality during operational phase of building within level of service needed. Electrical aspect of building has an impact of the building's purpose, safety, and comfort. Several finding in operation phase have been found regarding lack of quality of electrical maintenance process and spare part Material such as fire incident, waste of electricity and exesive stock of spare part. Thus, it's important to not only develop maintenance and reparation guidelines of electrical work but also it's Material Specification to keep the required level of service. The purpose of this study is to use work breakdown structure (WBS) methods as a proven method in decomposition to develop maintenance and reparation guidelines, as well as the Material Specifications in green building. The research methodology covers several stages: literature studies, information from previous projects, and delphi techniques through expert validation in green building electrical components. The results of this study are expected to create applicable guidelines for maintenance and reparation work of electrical component and it's Material Specification to eliminate or decrease finding of electrical issues in building operational.

  • development of maintenance reparation guidance and Material Specification for green building s electrical component in government building based on work breakdown structure wbs
    IOP Conference Series: Materials Science and Engineering, 2018
    Co-Authors: Resha Mochamad Ilham, Yusuf Latief, Leni Sagita Riantini, Budi Susilo
    Abstract:

    Initial quality of building depands on quality of design and construction phase of the building, while maintenance and spare part quality keep the decline of the quality during operational phase of building within level of service needed. Electrical aspect of building has an impact of the building's purpose, safety, and comfort. Several finding in operation phase have been found regarding lack of quality of electrical maintenance process and spare part Material such as fire incident, waste of electricity and exesive stock of spare part. Thus, it's important to not only develop maintenance and reparation guidelines of electrical work but also it's Material Specification to keep the required level of service. The purpose of this study is to use work breakdown structure (WBS) methods as a proven method in decomposition to develop maintenance and reparation guidelines, as well as the Material Specifications in green building. The research methodology covers several stages: literature studies, information from previous projects, and delphi techniques through expert validation in green building electrical components. The results of this study are expected to create applicable guidelines for maintenance and reparation work of electrical component and it's Material Specification to eliminate or decrease finding of electrical issues in building operational.

Resha Mochamad Ilham - One of the best experts on this subject based on the ideXlab platform.

  • Development of Maintenance-Reparation Guidance, and Material Specification for Green Building’s Electrical Component in Government Building Based on Work Breakdown Structure (WBS)
    IOP Conference Series: Materials Science and Engineering, 2018
    Co-Authors: Resha Mochamad Ilham, Yusuf Latief, Leni Sagita Riantini, Budi Susilo
    Abstract:

    Initial quality of building depands on quality of design and construction phase of the building, while maintenance and spare part quality keep the decline of the quality during operational phase of building within level of service needed. Electrical aspect of building has an impact of the building's purpose, safety, and comfort. Several finding in operation phase have been found regarding lack of quality of electrical maintenance process and spare part Material such as fire incident, waste of electricity and exesive stock of spare part. Thus, it's important to not only develop maintenance and reparation guidelines of electrical work but also it's Material Specification to keep the required level of service. The purpose of this study is to use work breakdown structure (WBS) methods as a proven method in decomposition to develop maintenance and reparation guidelines, as well as the Material Specifications in green building. The research methodology covers several stages: literature studies, information from previous projects, and delphi techniques through expert validation in green building electrical components. The results of this study are expected to create applicable guidelines for maintenance and reparation work of electrical component and it's Material Specification to eliminate or decrease finding of electrical issues in building operational.

  • development of maintenance reparation guidance and Material Specification for green building s electrical component in government building based on work breakdown structure wbs
    IOP Conference Series: Materials Science and Engineering, 2018
    Co-Authors: Resha Mochamad Ilham, Yusuf Latief, Leni Sagita Riantini, Budi Susilo
    Abstract:

    Initial quality of building depands on quality of design and construction phase of the building, while maintenance and spare part quality keep the decline of the quality during operational phase of building within level of service needed. Electrical aspect of building has an impact of the building's purpose, safety, and comfort. Several finding in operation phase have been found regarding lack of quality of electrical maintenance process and spare part Material such as fire incident, waste of electricity and exesive stock of spare part. Thus, it's important to not only develop maintenance and reparation guidelines of electrical work but also it's Material Specification to keep the required level of service. The purpose of this study is to use work breakdown structure (WBS) methods as a proven method in decomposition to develop maintenance and reparation guidelines, as well as the Material Specifications in green building. The research methodology covers several stages: literature studies, information from previous projects, and delphi techniques through expert validation in green building electrical components. The results of this study are expected to create applicable guidelines for maintenance and reparation work of electrical component and it's Material Specification to eliminate or decrease finding of electrical issues in building operational.

Cho Cho Khin Ma - One of the best experts on this subject based on the ideXlab platform.

  • Microstructure and tensile properties of superalloy IN100 fabricated by micro-laser aided additive manufacturing
    Materials and Design, 2014
    Co-Authors: Guijun Bi, Hui Chi Chen, Fern Lan Ng, Cho Cho Khin Ma
    Abstract:

    Layer by layer fabrication using micro-laser aided additive manufacturing (micro-LAAM) was successfully implemented on nickel-base superalloy IN100. It is known that IN100, a type of superalloy having high titanium and aluminum contents, has poor weldability due to weld liquation cracking in the heat-affected zone (HAZ) and strain age cracking. In this study, micro-LAAM process was optimized through a set of designed experiments to eliminate crack formation and reduce porosity. It was found that the crack-free deposition can be achieved owing to the fact that micro-LAAM process used in this study had very low heat input. Three distinct sizes of γ' precipitates were observed on the post heat-treated samples. The volume fractions of γ to γ' phases were found to be approximately 60-40%. Microstructure and chemical analysis results showed that γ' phase was embedded within γ-Ni matrix while various carbides (MC, M23C6 and M6C) were observed as precipitates at grain boundaries or within grains. Electron backscatter diffraction (EBSD) was used to compare grain morphologies and size distribution of three distinctly different regions on each layer. The achieved ultimate tensile strength and yield strength are much better than the minimum requirements specified in aerospace Material Specification 5397 for cast IN100. © 2014 Elsevier Ltd.

Khalil Ibraheem Imhan - One of the best experts on this subject based on the ideXlab platform.

  • Investigation of Material Specifications changes during laser tube bending and its influence on the modification and optimization of analytical modeling
    Optics and Laser Technology, 2017
    Co-Authors: Khalil Ibraheem Imhan, B. T. H. T Baharudin, Azmi Zakaria, Mohd Idris Shah Ismail, Nasseer Mahdi Hadi Alsabti, Ahmad K. Ahmad
    Abstract:

    Abstract Nowadays, laser tube bending process has become commonly used in laser Material processing and fabrication fields because of its ability to produce such forms and shapes that cannot be achieved by normal mechanical bending tools. The process can avoid and overcome most of bending defects like wall thinning, wrinkling, spring back and ovalization. This investigation focused on the experimental, analytical modeling, and numerical simulation to give more understanding of the process. In this work a high power pulsed Nd-Yag laser of maximum average power laser 300 (W) emitting at 1064 nm and fiber coupled has been used to irradiate stainless steel 304 tubes of diameter 12.7 mm, 0.6 mm thickness and 60 mm in length. An analytical model has been used to determine the bending angle by using Matlab program software. The changes of Material Specification during the laser tube bending process due to the temperature rise has been studied and the analytical model has been modified and enhanced. Particle Swarm Optimization (PSO) was used to optimize the analytical and experimental results and reduce the mean absolute error.

  • Laser tube bending process for stainless steel 304
    2017
    Co-Authors: Khalil Ibraheem Imhan
    Abstract:

    The invention of the laser light in the mid-last-century has opened a wide spectrum of laser Material processing due to being unique, coherent and monochromatic. Moreover, the laser forming process of Materials has a potential feature to produce new shapes of sheets or tubes that cannot be achieved through conventional methods. In this study, the focus is placed on the laser tube bending process because of its importance in large-term applications. Molds and dies are not currently in use; thus, no external forces that can cause tube bending defects such as wrinkling, wall thinning, springback and cross-section distortion. In addition, the process is flexible and can be controlled by laser parameters, either individually or in combination with other processes. An analytical model is used to study the effect of the average laser power, angular scanning speed, laser beam diameter, and specimen geometry during the laser tube bending process. The Material Specification impacts on the process behavior are analytically investigated for different Material such as Copper, Aluminum, Nickel and Stainless Steel 304. To verify the analytical results, a high-power pulsed Neodymiumdoped Yttrium Aluminium Garnet (Nd-YAG) laser of the maximum laser power of 300 (W) emitted at 1064 nm with a fibre-coupled head is used to irradiate stainless steel 304 tubes with a 12.7 mm diameter, 0.6 mm thickness. A motorized rotational stage with computerized control is used to hold and rotate the specimen tube 180° for one semi-circle scanning, with a maximum angular scanning speed of 40 deg/sec. The deflection of the tube directly was measured to determine the bending angle, which it was 1.33 degrees when the average laser power is 200 W and the angular scanning speed is 30 deg/sec. The study also discovered that the laser softening heat treatment on the tube specimens can enhance the Material absorption of the laser light and the mechanical formability; hence, the bending angle produced is increased by 70%. The experimental results become higher than the analytical results as the average laser power exceeds 100 W in both cases, with and without the laser softening heat treatment. Thus, due to the rise of the specimen’s temperature, hence, the analytical model is modified and developed to involve the changes of Material Specifications by adding a factor to the model once the laser power becomes more than 100 W. This behavior may be due to the temperature rise of the tube Material from the heat generated by the laser. The modified model has been tested and optimized by using particle swarm optimization (PSO) to find the perfect Specifications of the Material affecting the laser tube bending process such as thermal expansion coefficient, specific heat, yield stress, and absorption coefficient. The analytical and experimental results are in the same trend but with different slopes; the bending angle determined is directly proportional to the average laser power, and inversely proportional to the angular scanning speed. Meanwhile, increasing the tube diameter and thickness reduces the value of the bending angle produced. In addition, the Material Specifications of the bent tube have significant effects on the process, especially the expansion coefficient which is directly proportional to the bending angle and the density as well as the specific heat which are inversely proportional with the bending angle.

Yusuf Latief - One of the best experts on this subject based on the ideXlab platform.

  • Development of Maintenance-Reparation Guidance, and Material Specification for Green Building’s Electrical Component in Government Building Based on Work Breakdown Structure (WBS)
    IOP Conference Series: Materials Science and Engineering, 2018
    Co-Authors: Resha Mochamad Ilham, Yusuf Latief, Leni Sagita Riantini, Budi Susilo
    Abstract:

    Initial quality of building depands on quality of design and construction phase of the building, while maintenance and spare part quality keep the decline of the quality during operational phase of building within level of service needed. Electrical aspect of building has an impact of the building's purpose, safety, and comfort. Several finding in operation phase have been found regarding lack of quality of electrical maintenance process and spare part Material such as fire incident, waste of electricity and exesive stock of spare part. Thus, it's important to not only develop maintenance and reparation guidelines of electrical work but also it's Material Specification to keep the required level of service. The purpose of this study is to use work breakdown structure (WBS) methods as a proven method in decomposition to develop maintenance and reparation guidelines, as well as the Material Specifications in green building. The research methodology covers several stages: literature studies, information from previous projects, and delphi techniques through expert validation in green building electrical components. The results of this study are expected to create applicable guidelines for maintenance and reparation work of electrical component and it's Material Specification to eliminate or decrease finding of electrical issues in building operational.

  • development of maintenance reparation guidance and Material Specification for green building s electrical component in government building based on work breakdown structure wbs
    IOP Conference Series: Materials Science and Engineering, 2018
    Co-Authors: Resha Mochamad Ilham, Yusuf Latief, Leni Sagita Riantini, Budi Susilo
    Abstract:

    Initial quality of building depands on quality of design and construction phase of the building, while maintenance and spare part quality keep the decline of the quality during operational phase of building within level of service needed. Electrical aspect of building has an impact of the building's purpose, safety, and comfort. Several finding in operation phase have been found regarding lack of quality of electrical maintenance process and spare part Material such as fire incident, waste of electricity and exesive stock of spare part. Thus, it's important to not only develop maintenance and reparation guidelines of electrical work but also it's Material Specification to keep the required level of service. The purpose of this study is to use work breakdown structure (WBS) methods as a proven method in decomposition to develop maintenance and reparation guidelines, as well as the Material Specifications in green building. The research methodology covers several stages: literature studies, information from previous projects, and delphi techniques through expert validation in green building electrical components. The results of this study are expected to create applicable guidelines for maintenance and reparation work of electrical component and it's Material Specification to eliminate or decrease finding of electrical issues in building operational.