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Rapid tooling (RT) integrated with additive manufacturing technologies have been implemented in various sectors of the RT industry in recent years with various kinds of prototype applications, especially in the development of new products. The purpose of this study is to analyze the current application trends of RT techniques in producing hybrid mold inserts.

The direct and indirect RT techniques discussed in this paper are aimed at developing a hybrid mold insert using metal epoxy composite (MEC) in increasing the speed of tooling development and performance. An extensive review of the suitable development approach of hybrid mold inserts, material preparation and filler effect on physical and mechanical properties has been conducted.

Latest research studies indicate that it is possible to develop a hybrid material through the combination of different shapes/sizes of filler particles and it is expected to improve the compressive strength, thermal conductivity and consequently increasing the hybrid mold performance (cooling time and a number of molding cycles).

The number of research studies on RT for hybrid mold inserts is still lacking as compared to research studies on conventional manufacturing technology. One of the significant limitations is on the ways to improve physical and mechanical properties due to the limited type, size and shape of materials that are currently available.

This review presents the related information and highlights the current gaps related to this field of study. In addition, it appraises the new formulation of MEC materials for the hybrid mold inserts in injection molding application and RT for non-metal products.

The purpose of this study is to evaluate the potentials of nano-additives in enhancement of oxidation and thermal stability of biolubricants thereby, improving the resistance of dispersed nanolubricants to thermal degradation under elevated temperature.

This study evaluates the oxidation stability and tribological performance of nano-enhanced biolubricants. Graphene and maghemite nanoparticles at 0.1% volume concentration were dispersed into coconut oil. Oxidation stability was analysed using a thermal analyser to understand the effect of nano-additives on thermal degradation of lubricants under increasing temperature. In addition, tribological performance and viscosity of the tested lubricants were evaluated using a four-ball friction tester and viscometer according to American Society for Testing and Materials standards.

The results reveal that the oxidation stability of biolubricants dispersed with nano-additives improves due to delayed thermal degradation. The nano-enhanced biolubricants’ oxidation onset temperature was delayed by 18.75 °C and 37.5 °C, respectively, for maghemite (MGCO) and graphene (XGCO) nanolubricants. This improvement imparts the performance viscosity and tribological performance positively. For graphene-enhanced nanolubricant, 10.4% and 5.6% were reduced, respectively, in coefficient of friction (COF)and wear scar diameter (WSD), whereas 3.43% and 4.3% reduction in COF and WSD, respectively, for maghemite-enhanced nanolubricant compared with coconut oil. The viscosity index of nanolubricants was augmented by 7.36% and 13.85%, respectively, for maghemite and graphene nanolubricants.

The excellent performance of nanolubricants makes them suitable candidate as sustainable lubricants for machining with regard to environmental benefits and energy saving.

The effect of graphene and maghemite nanoparticles on the oxidation stability and tribological performance of biolubricants has been investigated. It is an original work and yet to be published elsewhere.

The purpose of this paper is to implement the istibdal waqf concept using a geographical information system (GIS) for the benefit of socio-economics and Muslim cemetery waqf management. GIS is a technique that provides clearer, precise and faster access to a location based on actual space data. It attempts to analyze the area that one wishes to develop to establish whether it fulfills the criteria set for istibdal.

This research was conducted qualitatively. The study begins with the development of the concept of istibdal waqf and the concept of GIS. The concept was developed by conducting a literature review of books, articles, newspapers, fatwa and circulars related to istibdal waqf and GIS. After the concept was formed, field studies were conducted on two mosques, namely, Jamek Jelutong Mosque and Masjid Jamek Sungai Nibong because both mosques have gravesites located within their compound. To obtain information on the problems faced by the mosques Jemaah community, researchers have interviewed the Mosque Committee Members and Jemaah Community in both mosques using the unstructured interviewing method. This process is essential in managing both material and spiritual for sustaining socio-economics of the society.

The results showed that by applying GIS technique could identify new land locations according to the criteria set by istibdal. Additionally, new location environments found through the GIS application can be viewed more clearly and accurately than using the manual method. The findings also revealed that some of the mosque managers and the heirs of the waqf grave land were not open-minded in accepting the istibdal concept of the grave that had been allowed by the Syarak until the process of expanding the mosque was affected. The study also found that the maslahah consideration was considered between doing istibdal waqf and not doing istibdal waqf, the maslahah of doing istibdal waqf is greater because general (umum) maslahah should be prioritized compared to the special (khusus) maslahah. In addition, this effort can appreciate the morality and ethics of waqf donors to donate their wealth or properties for benefit of society.

This study only focuses on Muslim cemetery waqf in Penang Island.

This study is expected to benefit both material and spiritual where Muslim cemetery site can be developed for expanding mosque site and consequently able to accommodate the increasing of Muslim using the mosque.

This study proposes the transformation of the concept of istibdal waqf from the traditional methods to modern and advanced methods using the GIS application. The study also demonstrates how the software for solving the real problem can be used, i.e. the problem of a limited mosque space for sharing space with a cemetery in Penang.