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Senast inlagda
Environmental Life Cycle Assessment of an Airborne Radar System
(2025) Abshir, Ahmed; Munck Larsson, Viktor
This thesis presents a comprehensive Life Cycle Assessment (LCA) of an airborne
radar system developed by Saab Surveillance, conducted in accordance with ISO
14040 and 14044 standards. The study evaluates the environmental impacts
of the radar across its entire life cycle, from raw material extraction to endof-
life, focusing on key impact categories including Global Warming Potential
(GWP), Acidification, Eutrophication, Mineral Resource Scarcity, and Terrestrial
Ecotoxicity.
The assessment identifies the use phase as the predominant contributor to environmental
impact, accounting for over 90% of total emissions in most categories,
primarily due to fuel combustion associated with airborne operation. However,
as this phase lies largely outside the control of Saab Surveillance, a complementary
scenario excluding the use and test phases was conducted to better identify
actionable environmental hotspots within the company’s sphere of influence.
Detailed analysis of the assembly phase revealed that components containing
printed circuit boards, especially those with gold-plated finishes, exert a disproportionately
high environmental burden per kilogram, driven by the energy-intensive
and material-intensive processes associated with gold production. Furthermore,
structural components made from iron-nickel-chromium alloys were found to contribute
significantly to acidification and resource depletion due to nickel-related
emissions.
Recommendations for improving the environmental performance of the radar
system include adopting more aerodynamic and lightweight designs, sourcing
materials from low-emission suppliers, utilizing alternative plating methods such
as nickel-palladium-gold, and exploring bio-based composite materials. Additionally,
the study highlights the potential benefits of implementing a formal
end-of-life disposal plan and considering take-back systems for high-impact
components such as PCBs.
The results provide a strategic foundation for Saab Surveillance to reduce its
environmental footprint, enhance supply chain sustainability, and align future
product development with ecological and regulatory expectations.
Thermae: Exploring the potential of geothermal energy of a hybrid facilty in Gothenburg
(2024) Algasra, Mussa
Currently, the world is heavily dependent on non-renewable sources of energy
such as fossil fuel. This has led to a number of environmental issues such as air pollution,
deforestation, and climate change. The need to transition to renewable energy sources has
become increasingly urgent, and many countries have set ambitious targets to reduce their
carbon footprint and increase their use of clean energy. However, while renewable energy
sources such as solar, wind, and hydropower have gained significant momentum in recent
years, there are still challenges to their widespread adoption. For example, the intermittency
and unpredictability of solar and wind power can make them less reliable for large-scale
energy production. There are also environmental concerns surrounding the production and
disposal of some renewable technologies, such as solar panels and batteries.
Geothermal energy is an alternative renewable energy source that has several advantages
over other forms of renewable energy. It is a reliable and consistent source of energy
that can be used for both electricity generation and heating/cooling applications. Additionally,
geothermal energy does not rely on weather conditions or the availability of sunlight
or wind, making it a more predictable and dependable source of power. Hence architects are
called upon to provide creative holistic and sustainable solutions to the growing demand for
energy and recreation facilities in urban areas.
The aim of this thesis is to investigate the potential of creating a hybrid facility
that combines a geothermal power plant and a thermal bath in Gothenburgh. In doing this,
the project also aims to explore how the energy produced from such an environment can be
reinterpreted and poetically expressed in architecture, providing unique spatial qualities that
enrich the human experience, inspire and educate the mind.
Design Test Rig for Trailer Connections - A Structured Approach to Developing a Customizable Test Rig for Trailer Connector Verification in Heavy Vehicle Production.
(2025) Malmberg, Axel; Gu, Yan
Reliable connections between truck and trailer are crucial for maintaining quality and safety standards within truck production. However, the current testing equipment is simplistic and lacks reliability especially when testing nonstandard trucks. This can result in potential production delays and quality issues. This thesis conducted in collaboration with Volvo Trucks, aims to address these issues by developing a specialized, modular test rig specifically for verifying trailer and bodybuilder
connectors within Volvo's Customer Adaptations. To identify user needs and market requirements. Stakeholder analyses, structured interviews and observations were performed. The gathered information from these segments formed a basis for requirements and a detailed development phase. Multiple design concepts were evaluated
using elimination and Pugh matrices. Finaly resulting in the selection of a modular and flexible solution utilizing Siemens PLC and HMI technology. The developed test rig incorporates robust electrical components and effectively supports all connector types such as VBG, NATO 12-pin, and ISO 12098. The rig also has additional capacity for
future integration of pneumatic and hydraulic testing modules. The outcome is a well-documented, scalable concept designed for widespread implementation across Volvo's production facilities, significantly enhancing operational efficiency and overall product quality.
Förvaringsanordning för strålskyddsprodukt mellan operationer
(2025) Olsson, Maja; Lilja, Josefin
MasterPeace is a radiation protection product used during minimally invasive surgeries to reduce healthcare staff’s exposure to ionizing radiation. Currently, there is no dedicated storage system for this product, which this thesis aims to investigate. The project was carried out in collaboration with Texray AB and was based on study visits,
including observations and interviews with healthcare professionals at Sahlgrenska Universitetssjukhuset and Hallands Sjukhus Varberg. Following this, idea and concept
generation was conducted to develop a solution that improves the working environment and workflow by simplifying the handling and storage of MasterPeace. Evaluation methods were then used to select a concept, which was further refined and optimized in dialogue with users. To ensure stability, calculations were also performed on the final concept.
The result is a mobile stand that stores MasterPeace with the flexibility to be repositioned for space optimization in the operating room. MasterPeace is hung using eyelets located in the corners of the product, which simplifies handling and improves drying capability. The final concept thus contributes to a more ergonomic, time-efficient and simplified use of MasterPeace
Interior Design of an Urban Air Mobility Vehicle for Use in Prehospital Medical Emergencies - Developing a Concept to Complement Today’s Ambulance Vehicles
(2025) Nevelius Wernholm , Matilda; Westberg, Linnéa
Urban Air Mobility (UAM) is a rapidly emerging field focused on creating aerial traffic systems in urban cities and utilising the air for transportation of passengers and cargo, to ease arising issues with traffic congestion and increased travel times. The research project Airmobility Emergency System (AMES) at Chalmers aims to develop a UAM
vehicle for implementation within emergency medical services in the near future, with focus on the Region Västra Götaland (VGR) in Sweden. UAM will serve as a complement when neither road ambulances nor helicopters are suitable options. This ensures that public emergency services can access accident sites regardless of ground conditions.
This project is part of AMES and focuses on developing a comfortable, functional, and user-friendly interior concept that meets the needs of ambulance personnel, enhancing their ability to provide care with effectiveness and efficiency. Based on literature, a survey and field studies conducted at the ambulance helicopter base and a road ambulance station in VGR, an interior design concept was developed and evaluated through 1:1 scale prototyping and CAD modelling. A final evaluation with paramedics in the full-scale
prototype, followed by refinements, resulted in a user-centred interior solution. The primary project deliverables consist of a visualisation of the concept through a comprehensive CAD model, supported by a detailed product speciation and an equipment list. Together, these deliverables propose a recommended interior design for an Urban Air Mobility (UAM) vehicle intended for future implementation in emergency medical services.
The proposed interior design concept features a seat–stretcher configuration with one stretcher positioned centrally. A seat is placed on each side of the stretcher, with an additional seat behind the patient’s head. Storage solutions are integrated at the back of the cabin to accommodate items not needed during flight. Additional storage is positioned along the ceiling. Loose equipment and bags can also be secured to the floor, enabled by the built-in L-tracks. In situations where the autonomous system would require human intervention, essential manoeuvring hardware such as stop buttons, displays and a dashboard, is incorporated into the design.