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- PostDesign av användarvänlig återvinningsenhet för hotellgäster(2024) Birgersson, Hanna; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Tuveson, Jonas; Tuveson, JonasSvenska Mässan Gothia Towers is a company where people come to visit exhibitions or stay at the hotel Gothia Towers. In this project a new concept for a recycling unit for the hotel has beendeveloped. The aim of this work was to suggest a solution that offers the possibility to sort waste for hotel guests. The company currently offers no recycling for the guests. However, there are waste types that are sorted out during cleaning of the rooms by the hotel cleaners. Such waste types include bottles and cans included in the return system (deposit), clear and coloured glass, and sometimes larger paper packaging. Given new laws regarding waste handling, the company wants to improve the recycling possibilities and include guests in the process. By understanding the users’ experience of the current waste handling, a new solution was created. The user studies consisted of self observations, surveys for hotel guests, and interviews with cleaners and other stakeholders in the company. The main areas of improvement identified were the need for guests to sort their waste and making the cleaning process easier for the staff. Ideas were generated using different methods including brainwriting, sketching and a morphological matrix. A total of six concepts were considered for evaluation. The evaluation process included sketch modeling and Pugh's matrix. After limiting the options one concept was chosen to be further developed. The chosen concept is a unit with four different fractions. One of the fractions included is a mixed fraction: a combination of deposit, clear and coloured glass packaging. The other three fractions included in the solution are paper packaging, food waste and residual waste. A mock-up was created and tested by cleaners who shared their thoughts on the result. Given these insights a few modifications were made. The addition of wheels was made to enable easier moving of the unit when cleaning the rooms. The updated concept also includes a rounder shape on the inside of the fraction to make cleaning the container easier. Finally the change to decrease the size of two fractions in order to increase the other two was made. This report is written in Swedish.
- PostUtveckling av handtag integrerade med SpaceMouse-styrningAndersson, Andreas; von Dolwitz, Hanna; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Evertsson, Magnus; Evertsson, MagnusIn today’s industries, lifting devices are common and often necessary. There are various types of lifting devices, ranging from cranes, forklifts, robots, and conveyors. Hofpartner’s lifting device Liongrip X is one of their newest and largest industrial lifting devices. Liongrip X can manually handle loads of up to 800kg and has high precision due to its multi-jointed arm, which provides a large range of motion. Today, Liongrip X is equipped with a control panel where the lift is operated using two industrial SpaceMouse controls. SpaceMouse is a commonly used CAD tool but is also used as a control device for industrial purposes. SpaceMouse can be easy to handle for those who are experienced, but users of Liongrip X have encountered difficulties in controlling the lift. On behalf of the manufacturer Hofpartner, this work will involve product development of handles integrated with SpaceMouse. The issue with Liongrip X is how the user handles the SpaceMouse. The SpaceMouse is programmed with specific degrees of freedom. Movements forward, backward, up, down, and sideways are programmed for the lift. A movement that doesn’t register is tilting forward or backward or sideways. In this report, tilt, tilting, and tilt function will be mentioned several times. The meaning of this is that the SpaceMouse is subjected to a rotational movement corresponding to tilting, similar to a ”joystick”. The product development for this work will focus on finding a solution that prevents tilting and provides an ergonomic handle for the user. The work has been carried out step by step according to a product development methodology. The first part of the work describes the product as a whole from the customer’s perspective and provides a clear picture of the different functions of the lift. Further on, the work shifts focus solely to the concept development of a handle
- PostSteg mot nollvisionen i gruvindustrin: Hörnreflektor och radarteknik som räddar liv(2024) Gonzales Rossel, Jesper; Hillén, Julia; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Hammersberg, Peter; Gustafsson, GöranWorking in the mining industry is dangerous due to the risk of injury from machines used in the mines. Accidents involving these machines can lead to severe injuries or even fatalities. The project was conducted together with the company RadChat to increase safety in the mining industry. The company aims to achieve Vision zero in underground mines, meaning that no one should be seriously injured or die in mining operations. The company's solution uses a radar and a chip, that does not work well at longer ranges and therefore an improved version has been developed. This bachelor thesis describes the process of improving a device designed to detect people and machines in mining environments. The project began with identifying and collecting requirements and requests from various parties involved. Ideas were then generated, different solutions were evaluated and tested. The less favorable options were eliminated until one concept remained. The device includes a corner reflector that reflects radio waves. It will also be possible to distinguish between different people and machines by rotating the corner reflector at different rotational frequencies using a motor. This solution is a big step towards achieving vision zero in the mining industry
- PostUtveckling av staket med integrerad solcellsteknik(2024) El Masri, Mohammed Ali; Forsman, Niklas; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Boldizar , Antal; Hansson, MattiasThis study aims to develop an embodied concept for a fence with integrated solar cell technology, specifically designed for gardens and urban environments. The project, commissioned by Raymond Solar AB, focuses on creating a scalable and sustainable product that meets both current and future demands within solar energy, while being tailored to the Nordic climate and compatible with Raymond Solar’s existing products. The central challenge is designing a fence that is cost-effective to manufacture and easy to assemble, while ensuring that it withstands the climatic challenges, has a low environmental impact, and is both functional and aesthetically pleasing. A particular challenge was to make the fence adjustable to allow for some tolerance in the positioning and inclination of the ground screws, which is crucial for ensuring a smooth and rapid installation. Additionally, the construction needed to be compatible with different types and sizes of solar panels to maximize flexibility. The project was conducted through a combination of literature reviews, competitor analyses, and computer-assisted testing. Traditional technologies and competitor solutions were thoroughly examined to gather relevant data. Functional analyses and specifications were established to ensure that the product meets all necessary functions and requirements. CAD software was used for design, while strength analyses were conducted using FEA software. The study resulted in a modular fence construction made of aluminum, with posts, bottom rails, panels, footings, and fittings. The design is easy to assemble with few screws and includes T-slots for flexible installation of solar panels. Additionally, the fence is ergonomic and time-saving during installation, and the design allows for adjustments to handle deviations in the placement and inclination of ground screws. The construction is also compatible with various types and dimensions of solar panels, increasing flexibility and enabling adaptation to different installation needs. The production offers the possibility of using recycled materials, and the fence is fully recyclable, significantly reducing its environmental impact. The study concludes that the developed fence with integrated solar cell technology meets the criteria for sustainability, cost-effectiveness, and ease of assembly. The robust construction ensures that the fence can withstand the challenges of the Nordic climate and offers a solution that is both environmentally friendly and practical for consumers and installers
- PostUtveckling av Slitagetålighetstest för Plastdetaljer(2024) Dalal, Ali; Honauer, Ludwig; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Boldizar, Antal; Boldizar, AntalThe purpose of the project was to investigate, plan, and, as far as possible, implement a method for evaluating the abrasion resistance of plastic in collaboration with the company FlexLink. Currently, FlexLink uses a method for evaluating abrasion resistance that takes 500–2000 hours to yield results. Our goal was to reduce this time to only 24–72 hours. Specific material choices were not included in the project as the focus was on developing a preliminary method for the materials currently in use. The project began with information gathering and study visits to RISE in Mölndal and Borås for detailed knowledge acquisition on the subject. Subsequently, a selection of methods was made to determine the method with the best potential to meet the objective. The chosen method was the “Pin on Ring” method. This is a modified version of “Pin on Disc,” which is currently used by FlexLink and RISE for material testing. Since the method is based on the existing method, several concept development stages were needed to produce a final product. Finally, CAD models and a rig construction were created to visualize the method. However, implementation could not be completed due to the lack of several critical components needed to build the equipment and thus validate and compare it with the existing method.