Browsing by Author "Wibowo, Arie"

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    Decision support method for contracting of non-original equipment manufacturer aero engine maintenance repair and overhaul service providers.
    (2017-10) Wibowo, Arie; Tomiyama, Tetsuo; Tjahjono, Benny
    Non-Original Equipment Manufacturer (Non-OEM) Maintenance Repair and Overhaul (MRO) service providers of aero-engines are facing challenges resulting from the rapidly changing MRO market. They need to offer innovative service solutions to airlines through, for example, PSS (Product Service Systems) offerings that combine service(s) and products. PSS can be achieved by either servitisation to add service offerings to products or productisation to add tangible products to service offerings. Currently, however, MRO contracts that include PSS offerings have been prepared based on experiences and intuitions. Ideally, these contracts should be designed to bring about a win-win situation for both airlines (as customers) and MRO service providers. This research aims to develop a new robust, scientific method to prepare contracts for decision makers of non-OEM MRO service providers. The research began with studying current general situation of the PSS in the aero-engine MRO market as well as, in particular, of a Non-OEM MRO service provider. From these, this research first identified sufficient key parameters that describe MRO operations with regard to flight operations of customer airline. A computer-based simulation model was built to assess the capacity and capability of the shop floor operations taking flight operations of the customer into consideration using the discrete event simulation. The simulation model was run over a set of systematically and exhaustively created combinations of different types of services and products. This has helped in selecting the most favourable combinations services and products, which can lead to the win-win situation for both the airlines and the MRO service providers.
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    Designing contracts for aero-engine MRO service providers: models and simulation
    (Elsevier, 2017-03-02) Wibowo, Arie; Tjahjono, Benny; Tomiyama, Tetsuo
    The aero-engine Maintenance-Repair-Overhaul (MRO) service provider has begun to adopt the product-service system (PSS) offering in order to maintain their competitiveness. Such total solution approach combines an availability-based service contract with product offerings (e.g., leasing). The current MRO service provider's contract design method is inadequate to support this offering. Miscalculation often occurs, because many of the decisions are often based on intuitions and experiences, resulting in lower quality, higher cost and longer turnaround time for the maintenance. This paper proposes an enhanced contract design method that is more scientific through the simulation modelling. The models incorporate both customers’ requirements and the shop floor's operational availability. The paper provides discussion on how the results of the simulation of the models can be used to support decision making and the design of availability based contracts.
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    Towards an integrated decision making framework for aero engine MRO contract management in the productisation context
    (Elsevier, 2016-06-13) Wibowo, Arie; Tjahjono, Benny; Tomiyama, Tetsuo
    One of the most critical elements in the ‘productisation’ of service adopted by today's aero-engine Maintenance Repair and Overhaul (MRO) companies is the match between customer demands and the operational capabilities of the MRO shop. Currently, the service contract is offered based upon experience and intuition rather than on scientific approach. This paper presents an integrated decision making framework to design contracts that considers demand and operational parameters. In addition to literature survey, the approach adopted in building the framework is a case study research, which obtains data from semi-structured interviews, observations and the company archives. Two main perspectives, dynamic operational parameters and shop floor operational parameters, were identified as essential and pertinent to the design and management of the service contract in the productisation context. The framework will incorporate both perspectives to support productisation.