Examensarbeten på grundnivå

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https://odr.chalmers.se/handle/20.500.12380/40

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Utveckling av handtag integrerade med SpaceMouse-styrning
Andersson, 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, Magnus
In 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
Steg 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, Göran
Working 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
Utveckling 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, Mattias
This 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
Utveckling 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, Antal
The 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.
Materialval i VA-system baserat på miljöoch klimataspekter samt anläggning-, driftoch underhållskostnader
(2024) Carlsson, John; Vainio, Axel; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Persson, Christer
This thesis was commissioned by Växjö Kommun and aims to investigate the three sustainability dimensions in relation to different materials and their role in the water and sewage industry. Växjö Kommun seeks more data to support their material selection decisions in projects, as current decisions are sometimes based on personal opinions. The materials explored include PE and ductile iron in pressure pipelines, PP, PVC, and concrete in gravity pipelines, and PP and concrete in two types of wells. The ecological sustainability dimension has been analyzed through quantitative calculations based on EPD studies and LCA conducted for the various products, as well as discussions on environmental perspectives with municipalities. Since not all aspects are included in the product environmental declarations, the analysis only covers the production stage, with values for the materials also sourced from Granta EduPack. The economic sustainability dimension has been investigated by analyzing damage history and consulting with knowledgeable individuals from Gothenburg, Kalmar and Växjö who work with damage frequency, damage history, and costs related to these damages. The social sustainability dimension has been examined through interviews with individuals from three different municipalities, focusing primarily on differences in working conditions when using different materials. The results show that there are ecological differences between materials but that it should be further explored as only a small part of the entire life cycle has been able to be analyzed for all products, EPD-studies were also missing for certain well-components and other products that would have been relevant to compare. The interviews reveal that some municipalities currently do not consider environmental aspects when selecting materials for piping. From an economic perspective, more resources are required to accurately determine all cost differences throughout the products' life cycles. Regarding working conditions and other social aspects, there should be no significant differences if the work is carried out correctly, even though the work processes may vary depending on the material chosen.

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