The temperature difference in the weld area during the process of welding, cooling the welded product, and post-welding affect the formation of distortion. Therefore, this study aims to evaluate the distortion formed and hardness behavior on the ASTM A36 (EN S275) steel plate while welding using different cooling media including air, water, and ice. This involved using the MAG (Metal Active Gas) method, which used the AWS A5.18 ER70S-6 electrode with a 1 mm diameter and an 8 mm plate thickness. The value of distortion on the MAG-welded steel plate was measured using a digital dial indicator and evenly distributed by first making a grid. Moreover, the measuring points from the transverse and longitudinal directions were placed at 20 and 8 rows with a distance of 10 mm between points for each variation of the cooling media, such that 10 mm each was allowed left-right and top-down. The results showed that the highest distortion value of 3.13 was formed on the second row of the air cooling media, and this media was also used to determine the contours and distortion profiles.

No abstract

Aceh Province is an area surrounded by coasts which has great potential to develop marine product cultivation, one of which is seaweed. In line with the goal of the central government in 2018 stating its support for increaseing seaweed cultivation in Aceh Province. Meanwhile, the Ministry of Maritime Affairs and Fisheries' Directorate General of Cultivation stated that so far the seaweed industry and cultivation are still constrained by transportation problems for marketing. Based on the results of research in a number of regions in Indonesia, it is explained that the coastal area of Aceh is an area that has very good potential for the seaweed cultivation. This study focuses on the Glacilaria sp seaweed cultivation due to its easiness to grow in community ponds. The drawback of this pond cultication method is the existence of predators that eat seaweed and the pond bottom mud that pollutes the seaweed. The application of floating house technology for glacilaria seaweed culture is seen as a solution for aforemention problems. This technology protects the seaweed from predators and the contamination of the seawee from mud pond. The proposed sea seaweed cultivation method is anticipated to offer better income and improve the quality of life of the community, especially in the the targeted area, Alue Naga. Regarding the current situation, Farmer in Alue Naga still practice the conventional method for cultivating the seaweed in the land pond. This regular method has the shortcoming in protecting the seeweed from the predators. In addition, due to the seaweed attached to the bottom of the pond, it causes the slow growth of seaweed. These circumstances cause the crops have lower quality, result in a hardly marketable product either for national or international markets. To cope with such conditions, an easy to use, reliable and safety floating house was proposed and built for the use of glacilaria seaweed culture. The community is also engaged in the workshop and construction of floating house for the glacilaria seaweed culture taught by staff of Cot Irieh Fiberlass workshop. This engagement aims to increase the insight and skill of the community regarding construction and maintenance of the glacilaria seaweed culture floating house. This study is fully supported by Syiah Kuala University Research and Community Service Institute through fostering the Alue Naga fishing community through direct application of technology.

Currently, the condition of fishing facilities for Acehnese fishermen is experiencing difficulties with raw materials due to the difficulty of obtaining good quality wood that is resistant to immersion in water. The Aceh boat measuring 7 meters long which is often referred to in the Acehnese language, namely Boat thep thep is one of the facilities used by Acehnese fishermen to carry out all activities. The application of composite materials or the method of making composites through Hand lay up and Spray up technology is very appropriate to solve this problem. The application of thermosetting polyester resin reinforced with E glass fiber has been proven to be able to increase the efficiency of using this method to become a superior product. This is very appropriate to answer the problems of Acehnese fishermen who have continued to experience losses in the operational cost sector. The main objective of the activity is to create an entrepreneurial partner unit that has the passion and expertise to increase competitiveness against fellow competitors who are directly related to the food security program. national. This is a manifestation of the use of campus academic research results for the community. The target of implementing this product-based science and technology program for the community is that in the short term, it will prioritize increasing the ability of partners and students to improve skills, improve skills in how to produce 2 GT Boats, with improving business management, and help create access to form new business worlds.

The province of Aceh is known for its coastal area which has enormous potential for the development of aquaculture of aquatic biota, both freshwater and saltwater communities. The potential for production from freshwater and saltwater fish businesses will be even more exciting in 2021. This is because the amount of fish consumption per capita of the world's population reaches 19.6 kg per year. This value is obtained from the results of estimates through the United Nations Food Agency in 2011. For this matter, various matters relating to the cultivation system must be prepared, starting from the stage of the enlargement process to the stage of feeding or baiting which is more regular and has precise calculations. The purpose of making this automatic feed machine product is to make it easier for aquatic biota cultivators the process of feeding aquatic biota in ponds and ponds through the development of an automatic feed distribution system equipped with systematic timing. With this equipment, the perpetrators of cultivating aquatic biota are able to provide feed easily and regularly so that it helps avoid aquatic biota experiencing a lack of feed which ends in death. The biggest benefit is that cultivators have time savings as well as labor cost savings. The results of this equipment manufacture in the form of a feed control system and feed spreader automatically assisted by the supply of solar power directly to the solar panel so that it is able to convert light energy and sunlight into electrical energy. The output of this product is expected to be able to provide the right solution to cultivators in increasing income and making it easier to use easy and efficient tools.