Handcycle is a transportation tool for individuals with lower limb disabilities. This study designed a handcycle as a mode of transportation to facilitate the accessibility of persons with disabilities. The design of the handcycle was designed on a prototype scale. It referred to recumbent and synchronous frame geometry types for arm crank set up to do finite element analysis studies using Autodesk Fusion 360 software to find the value of the strength of the handcycle frame design. A decent frame at 160 kg loading with a critical value of 330 MPa was designed and became a reference for the handcycle production process.

The tourism village of Kalakijo, Yogyakarta, promotes batik and traditional culinary ‘ingkung’ as its main branding strategy. To date, the marketing and promotion of Kalakijo are performed based on conventional strategies. The emergence of the pandemic in recent years further complicates the problems faced by micro, small, and medium enterprises (MSME) owners in Kalakijo. This program aimed to assist the development and application of digital marketing strategies to increase the reach of promotions and attract the interest of younger generations in batik and ingkung. Prior to program implementation, surveys and discussions with Kalakijo villagers and business owners were carried out. The programs were implemented in several steps, including strengthening brand identity, building websites, making product catalogs, and setting up e-commerce platforms. Evaluation and monitoring were also carried out regularly during the program implementation. Through this program, MSMEs in Kalakijo are able to become entity that are independent, adaptive, and competitive in the digital era.

POTENTIAL EXPANSION OF JOGLO AND GAMELAN AS CULTURAL TOURISM DESTINATIONS. Joglo is one of the heritage forms of traditional Javanese houses in Yogyakarta, as well as traditional Gamelan musical instruments.  The former Head of the Gilangharjo Village Jetis, Gilangharjo, Pandak, Bantul opened a Joglo with a set of Gamelan music equipment. Joglo has been approved as a cultural heritage building by the DIY Provincial Government. Even though Joglo has become a cultural heritage building, the potency for cultural heritage houses and Gamelan musical instruments are underutilized by residents. The development of Joglo cultural tourism and Gamelan will run well by involving the village community. This service aims to empower the community to increase the potency of Joglo and Gamelan to become cultural tourism destination and become community-based tourism. The purpose of this service are to participate by involving the village community involved in tourism development and starting to become known as the Joglo location and Gamelan arts in Jetis Village. The results of this service consist of profiles of Joglo websites and videos. Utilizing the advances in information technology and social media, the more popular Joglo in Jetis RT 03.

Pondok Pesantren Asy-Syifa' Muhammadiyah (PPAM) in Yogyakarta established several Micro, Small and Medium Enterprises (MSMEs) including production units of tempeh, mineral water, coffee, and donut. The main obstacle experienced by the MSMEs is the traditional marketing system which limits the sales of products. The current program aimed to assist the adoption of information technology, especially in marketing techniques using social media and e-commerce. The activities included discussions with MSMEs owners, socialization of marketing techniques, creating social media accounts, making of product catalogs, and evaluation. In general, all the activities could be carried out as targeted. After participating in this program, the MSME owners at PPAM are able to use social media and e-commerce to increase product marketing and sales.

CFRP structures are often exposed to humid environment resulting in water absorption and causing property degradation. Water swelling and its effect on tensile, compressive, and flexural properties were investigated according to ASTM standards. Fracture modes were evaluated by analyzing micrographs of fracture areas. The specimens were cut from twill wave CFRP composite plates fabricated using a vacuum infusion technique. Some of them were immersed in water prior to being mechanically tested. It was found that tensile strength, as well as compressive, and flexural strength and moduli decreased due to water swelling, but fracture strain was found to increase due to water swelling. The most severely affected by water swelling is flexural strength (decreased by 25.72%), and the least is compressive modulus (decreased by 1.89%). Tensile specimens underwent fibre breakage followed by matrix cracking, compressive and flexural specimens showed fibre buckling followed by kinking and crushing where flexural specimens failed in their compressive side. In conclusion, water absorption has a bad impact on the composite strength.

Lightweight structures have widely been used due to their weight saving. Aluminum alloys are among the alternative for their material, and they are mostly manufactured by employing welding process using the same filler material as the base metal. Aluminum welding process can be conducted employing 2-layer semiautomatic MIG when the thickness of the plate is no more than 5 mm. Porosity in aluminum alloy welding is considerably difficult to avoid due to hydrogen and oxygen environment. Macro-micro analyses on 2-layer semiautomatic MIG welding of AA5052 material using ER5356 electrode have been carried out. A pair of AA5052 plates of 400 mm x 75 mm x 5 mm were clamped at three points of one side and welded using 2-layer semiautomatic MIG welding using ER5356 filler such that angular distortion can happen. Welding speed of 6, 7, and 8 mm/s using electrical voltage of 23 Volt, current of 130 Ampere, filler diameter of 0.8 mm, and shielded using argon gas. After completion of the welding, angular distortion was measured using dial indicator possessing accuracy of 0.01 mm. Welding result was micro-Vickers (VHN0.1) hardness, tension and Charpy impact, as well as micro structure using OM and SEM-EDS. The highest tensile strength was found at welding speed of 7 mm/s, angular distortion of 6.780, average VHN0.1 of the BM, HAZ, and WM of 47.82, 49.14, and 51.75, respectively. Tensile strength of 156.5 MPa and joint efficiency of 70%, BM failure strain of 17%, Charpy impact of 0.26 J/mm2. SEM-EDX at spot shows that the amount of Mg is not significant for being Al2Mg3 precipitate such that Vickers hardness distribution do not show any difference among BM, HAZ, and WM.

Simultaneous double-sided MIG welding as alternative method for joining the skin-stringer T-joints were investigated. The microstructure and mechanical properties of the welded joints were examined. Our study showed that a distance of 27-mm (torch to surface) results in the best weld appearance. Shorter distance produces higher heat input and causes the material stringers to melted with the filler, while longer distance increases the number of porosity and prevents the formation of a complete fusion zone.

The frame is one of the most important parts in a series of constituents of a bicycle. The materials for making bicycle frames usually use tight and strong materials such as stainless steel, carbon and titanium. Mild steel is steel with low carbon, which is about 0.05-0.30%. After conducting a tensile test on the mild steel material used on the handcycle bicycle frame, the highest stress results were 1,093.87 N/mm² and the highest strain was 0.167%. For the results of stress analysis contained in the autodesk inverter, the von mesess results are obtained for men weighing 70 kg von mesess maximum 1400 mpa and women weighing 60 kg 1200 mpa. The maximum displacement generated for men weighing 70 kg 96.63 mm and women weighing 60 kg 82.83 mm. For the safety factor obtained based on the safety number from Dobrovolsky for static loads, the safety number is 1.25-2; dynamic load 2-3 shock load 3-5 while the safety rate that occurs in the load is 0.15 for men weighing 70 kg and 0.16 for women weighing 60 kg. So the handcycle bikes that we made are safe to ride because the results obtained are still below existing standards.