This master's thesis deals with design and manufacture of a prototype of pitman front right wheel of student's formula Dragon 4 of a team TU Brno Racing with use of advanced CAD/CAM technology. Opening part of the thesis deals with the theoretical analysis of milling technology. Furthermore, there is an analysis of aluminum alloys, which aims to integrate the material being machined CERTAL. In the practical part of the work the construction of pitman is done using CAD software SolidWorks 2012 and proposal of milling strategies is done using software PowerMILL CAM 10. The following is the realization of manufacture in CNC machining center MCV 754 QUICK at Bosch Diesel Ltd, in Jihlava. Techno-economic evaluation of the manufacture is done in conclusion.

Indiana University-Purdue University Indianapolis (IUPUI) / Previous works suggest that 80% to 90% of failures observed in the rotary machines are accounted for fatigue failure. And it is observed that cyclic stresses are more critical than steady stresses when the failure occurred is due to fatigue. One of the most expensive industries involving rotary machines is the Oil and Gas industry. The large drilling tools are used for oil extracts on-shore and off-shore. There are several forces that act on a drilling tool while operating below the earth's surface. Those forces are namely pressure, bending moment and torque. The tool is designed from the baseline model of the former tool in Solidworks and Design Molder. Here load acting due to pressure and torque accounts for steady stress i.e., Mean Stress and loading acting due to bending moment account for fluctuating stress i.e., Alternating Stress. The loading and boundary conditions have been adapted from Halliburton’s previous works for the LWD drill tool to better estimate the size of the largest possible transducer. The fatigue analysis of static load cases is carried out in Ansys Mechanical Workbench 19.0 using static structural analysis. The simulation is run to obtain results for total deformation, equivalent stress, and user-defined results. The component is designed for infinite life to calculate the endurance limit. Shigley guidelines and FKM guidelines are compared as a part of a study to select the best possible approach in the current application. The width of the imaging pocket is varied from 1.25 inches to 2.0 inches to accommodate the largest possible transducer without compromising the structural integrity of the tool. The optimum design is chosen based on the stress life theory criteria namely Gerber theory and Goodman Theory.

This work discusses the modification and analysis of the Blue Thermal Vacuum Chamber (TVAC) located at the Space Environments Lab at California Polytechnic State University, San Luis Obispo. The modified design has a cylindrical test section and can accommodate 6U Cubesats or larger for educational or research purposes. The sizing process for the modified shroud cooling system and modular heating plates is discussed. The modified cooling system uses existing nitrogen plumbing into the chamber and control systems with a new copper shroud. The modified heating system uses modular heater plates, which utilize the existing three heater strips. The modified system includes high emissivity coatings for improved heat transfer performance, lower thermal mass materials to minimize thermal mass and liquid nitrogen consumption, and modular components for flexibility in operation. Analysis presented shows correlation between experimental results and a steady state thermal model using SolidWorks and SolidWorks Flow Simulation. The results demonstrate a maximum absolute difference in modeled vs experimental temperatures at measured locations of 11C in all cases, and 3C for test article temperatures only. Chamber performance is compared and characterized through a series of thermal vacuum tests and demonstrates capability exceeding ISO 19683 requirements for all thermal vacuum chamber testing categories except tolerance, with a tested temperature range of -145C at the shroud to 95C at the heater plates, >10 cycles between -15C and 55C, dwells in excess of 3 hours, ramp rates of 1-2C/min, and chamber pressures under

In recent years, there has been a growing concern over the adverse effects of traditional fossil fuels on the environment and health. Therefore, there is an increased interest in hydrogen as a fossil-free fuel source, making the need for hydrogen solutions apparent. This supports the purpose and research questions of this study, which aim to determine the suitable materials for handling hydrogen and the necessary design for structural integrity to withstand pressure. This will be achieved through additive manufacturing using polymers. The study also considers the potential of additive manufacturing for large-scale production. After conducting literature studies, polymers are of special interest due to their different structural build compared to metals. Metals do not handle hydrogen well because of the phenomenon known as hydrogen embrittlement. The preferred material properties in polymers are a crystalline structure, high density, and strong mechanical properties. The design and production are conducted using SolidWorks, with simulations of pressure and topology optimization, making it possible to create a part ready for 3-D printing after slicing. The results provide insights into the effects of parameter adjustments on the structure of the parts and the feasibility of large-scale production through additive manufacturing. By analysing the slicer program, conclusions can be made that additive manufacturing is a viable option for large-scale production, given the availability of multiple printers. However, the conclusion regarding the optimal design for handling pressurized hydrogen could not be made due to a lack of time for testing.

Instruktioner har syftet att förmedla ett arbetssätt eller utförande av en uppgift som användaren sen tidigare inte är bekant med. För att instruktionen ska vara framgångsrik krävs dock att den utformas på ett sätt som gör den enkel att använda och att tolka korrekt. Större efterfrågan på kundanpassning och krav på flexibilitet gör att tillverkande företag i allt större omfattning behöver effektiva metoder för att ta fram instruktioner. På uppdrag av PartnerTech i Åtvidaberg genomfördes under vårterminen 2014 ett examensarbete inriktat mot att underlätta framtagning och revision av instruktioner. Vilka presentationsformer som bäst stödjer användaren var också del av det huvudsakliga målet. Utöver det önskades även en metod för att kategorisera produkter efter monteringskomplexitet, vilket skulle underlätta fördelning av personal. PartnerTech är en kontraktstillverkare som ständigt ställs inför nya produkter och produktionsscenarion, vilket medför löpande behov av nya instruktioner. Bakgrunden till initiativet för projektet ligger i att den nuvarande metoden inte upplevs som tillräckligt effektiv och att kunskap från vetenskapliga studier saknas. Examensarbetet har utförts av en student vid det maskintekniska programmet på Linköpings tekniska högskola. Projektet inleddes med en studie av nuläget och forskningsresultaten inom de berörda områdena. Därefter utvärderades mjukvaran SolidWorks Composer för att se vilka fördelar den skulle kunna bidra till, jämfört med det nuvarande arbetssättet. Ett förslag till en layout för en alternativ form av instruktion utarbetades utifrån fynden under litteraturstudien, vilken senare testades på verkliga produkter. Parallellt utvecklades en metod för att kategorisera produkterna som produceras i Åtvidaberg. Projektet resulterade i en alternativ layout för instruktionerna och ett förslag till ny presentationsmetod. Som framtagningsverktyg föreslås Microsoft Powerpoint, vilket använts under projektet och visat på flera fördelar mot nuvarande program. Istället för att som idag använda utskrivna papperskopior av instruktionerna föreslås presentation via bildskärmar i form av ett bildspel. Utvärderingen av SolidWorks Composer visade att det finns potential för att effektivisera framtagningen av bilder för instruktionerna, förutsatt att ett antal kriterier uppfylls. Metoden för kategorisering av produkterna resulterade i en checklista, baserad i huvudsak på ja/nej-frågor. / The purpose of instructions is to pass a strategy or method for work on to a previously unexperienced person. For an instruction to be successful it must be designed in a manner that allows easy use and correct interpretation. The increasing demand for customer customization and flexibility leads to an ever increasing need for manufacturing companies to create and utilize instructions in an effective way. On the behalf of PartnerTech in Åtvidaberg, a project was conducted as a master thesis during the spring semester of 2014, with the target of facilitating the creation and revision of instructions. How information should be presented to best support the user was also a main objective of the project. Beside this, a method for categorizing the company’s products was requested, to facilitate the allocation of personnel at the assembly lines. PartnerTech as a contract manufacturer is continuously challenged with new products at various development stages. As a consequence, instructions needs to be created regularly. The initiative for the project originates from the dissatisfaction related to the current method. The master thesis has been conducted by a student at the mechanical engineering program at Linköping University. The initial part of the project involved a study of the current method and the company’s needs, as well as research within the concerned areas. Later the software SolidWorks Composer was evaluated to see which possible benefits it could hold. A proposal for a new layout of the instructions was developed, based on the found literature during the research. Instructions was established using the layout and principles, which then was tested on real products. Parallel to this a method for categorizing the products was developed. The project resulted in an alternative layout for instructions and a proposal for a new presentation method. The tool proposed for creating and maintaining the instructions is Microsoft PowerPoint, which was used during the project and showed several benefits compared to the current software. The evaluation of SolidWorks Composer showed that there is potential for more effective creation of images for instructions, given that some criteria is fulfilled. The method for categorizing products resulted in a checklist, based essentially on yes/no-questions.

A mezzanine is an extra floor which is used to be able to use more area both below and above the mezzanine plane. The Mezzanine is used in many various places, but this thesis is focusing on a mezzanine which will be used in in warehouses. A mezzanine concept is designed to fulfill a need within Brännhylte lagersystems AB, which is a mezzanine plane with Z-160 beams as a main component. A requirement specification is developed to help understanding what requirement the mezzanine should fulfill. With the help of the requirement specification a mezzanine concept is developed which fulfill these requirements. Because the mezzanine will have to withstand a lot of forces from different loads and people walking on it therefore it must be steady and secure. The maximum forces when the mezzanine reaches its maximum bending limit of beam length divided by 400 is calculated. This information can be used in the future to adapt the mezzanine depending on what weight it needs be able to withstand. / Ett entresolplan är ett extra våningsplan som man kan montera upp för att utnyttja mer yta både under och över entresolplanet. En entresol används på många olika platser, detta examensarbete fokuserar dock på ett entresolplan som kommer att användas i lagerlokaler. Ett entresolkoncept designades för att uppfylla ett behov ifrån Brännhylte lagersystems AB som ville ha ett entresolplan som använder sig utav Z-160 balkar som huvudkomponent. En kravspecifikation utvecklades för att få konkreta uppgifter vad som skulle uppnås med entresolen. Med hjälp av kravspecifikationen utvecklades ett entresolkoncept som uppfyller dessa krav. Eftersom entresolen kommer att utsättas för massa olika vikter under användning samt att människor ska kunna gå på den så är den tvungen att vara tillräcklig stadig för att kunna användas säkert. Därför analyserades den maximala kraften som entresolplanet kan klara av innan den når sin nedböjningsgräns som är balklängden delat på 400. För att den informationen ska kunna användas i framtiden och för att kunna anpassa entresolen utifrån hur mycket vikt man vill att den ska klara av.

På samtliga gymplatser finns alltför många maskiner och redskap idag. De flesta nybörjare har svårt att komma igång med träning, speciellt om dem tränar ensamma. Nybörjare har större chans att överge gymmet än de erfarna. Antalet maskiner och redskap ökar varje år då flera individer börjar hoppa på den nya trenden (fitnessindustrin). Professionella atleter kräver mer än det utbud som finns idag. Resistansträning reducerar skador och assisterar atlet eller nybörjare till att använda muskelgrupper som stärker kroppen utöver träning med vikt Detta examensarbete utgår från att designa en estetisk och funktionell design för en gymprodukt. Dagens samhälle är mer inriktad mot träning jämfört med tidigare. Då teknologi som avanceras blir människan latare. Sedan start av pandemin år 2019 har antalet privatpersoner med ett hemmagym ökat. Produkten som Företag A tillverkar inriktar sig mot företagsgym, privatpersoner samtprofessionella atleter. Examensarbetets primära fokus är att tillsammans med Företag A utveckla en produkt vars syfte är att underlätta träning för marknaden samt öka tillgänglighet och förståelse för träning.  Innan projektet påbörjade skrevs ett konfidentiellt avtal som samtliga parter signerat. Tillsammansmed konfidentiella avtalet skrevs de kravspecifikationer som var viktiga för produkten och dess funktion. Följande frågeställningar ställs för projektet:  Q1: Är den slutliga designen estetisk tilltalande från perspektivet av Företag A? Q2: Hur kan krav för funktioner och estetik kombineras på det mest effektiva sätt? Q3: Hur ska kravspecifikationerna tillämpas för koncepten och delsystemen? Q4: Hur kan koncepten kombineras för det teoretiskt mest effektiva sätt? Med hjälp av litteraturen Produktutveckling, samt hjälp av handledaren underlättades arbetet. Projektet undergick ett par olika faser från att generera koncept, välja ut de viktiga koncepten till att vidareutveckla på dem valda koncepten för ett färdigt resulterande slutkoncept. Detta slutkoncept blir då designen för den färdiga produkten. Slutprodukten resulterade i en sammanfogning av olika koncept för att effektivt integrera design med funktion. Då Företag A ansåg slutdesignen som estetisk tilltalande design så slutfördes arbetet på ett successivt sätt, där alla kravspecifikationer (inom räckvidd) erhölls. Samtliga kravspecifikationer som projektet inte täckte, blir svarade under tillverkningsprocessen som är bortom studenternas uppgifter.Det slutliga konceptet resulterade i en total vikt på 4,731kg, och en preliminär tillverkningskostnad på12 313kr. Resultatet av dessa faktorer överträffade de krav och idealvärden satta för produkten. Den framtida utvecklingen av projektet kräver vidaretestning av funktioner, geometri och sammansättning av komponenter då detta projekt endast framhäver en hypotetisk fungerande produkt. / There are far too many gym machines and equipment’s these days. The majority of the new gym members find it hard to train regularly, especially if they train alone. New members also tend to skip the gym more frequently than that of the experienced and established members. The number of machines and equipment’s used for training purposes increases every year because of the fitness industry increasing in popularity. Professional athletes demand more advanced products because of the increase in competition. Resistance training is the most popular training method because more people look to building muscles rather than functional training. The benefits of resistance training includereduced injuries, builds, and strengthens the muscles. The purpose of this theses is to design a functional and aesthetically pleasing gym product. Today’s generation is more invested in fitness than the past generations. The more technology advances, the lazier humans have become. When the COVID pandemic hit in 2019, the amount of home gym owners reached an all-time high. The product that Company A wants to manufacture is targeted for professional athletes, commercial gyms and for private use. This thesis primary focus is to develop a product with the purpose of facilitate training for the fitness industry, increase availability and build a better understanding for training. This project had a confidential agreement that every participant signed before start. Together with the confidential agreement, the product requirements were written and accepted by all participants. The product requirements include the functional capabilities of the finished product. The following research questions were used to determine the success of the project:  Q1: Is the finished product design esthetically pleasing for Company A? Q2: How can the functional requirements combine with an esthetic design in an effective manner? Q3: How can the product requirements apply for the concept and its part subsystem? Q4: How can the concepts combine in the most effective manner theoretically? This project used most of the help from the supervisor(s) and the “Produktutveckling” literature. The project underwent a few phases as explained in the literature, to generate and select the most useful concept. The chosen concepts were then further developed for a resulting design concept. The developed concept was then chosen as the finished design, by an agreement of the participants. The finished product design resulted in a combination of the different concepts generated in the earlier phases. The reason behind the combination was to include the pros and exclude the cons of each design concept. The project was a success, since Company A approved the design and considered the finished concept as aesthetically pleasing. All of the product requirements that was set were unchanged and included in the finished product. The remaining product requirements that were left unanswered could only be determined by manufacturing and further testing, which is beyond the students signed agreements.

Mobility is a symbol of dignity. A platform lift enables everyone of different physical abilities to move vertically with ease. Currently, the platform lift by Aritco Lift is made of steel sheet metal. It is heavy, thus difficult to handle. Sandwich design is researched to see whether and, if possible,how much dead load reduction. A simulation model is produced in SolidWorks to facilitate the material selection and the sandwich design. Sandwiches of aluminium face sheets are investigated, although steel face sheet works as well. No recommendation on core material can be made. Connection methods are investigated in SolidWorks to join the 35mm-thick sandwich-based floor to the lift body without creating a large deflection. Several general directions are investigated. None yielded results sufficiently satisfactory, although two directions have provided results that are very close to the requirements. Simulations are conducted on a 40mm-thick sandwich using one of the optimal joint options, yielding better weight savings and deflection results. Certain honeycomb properties are approximated using formulae rather than measured or simulated directly. To quantify how significant is the deviation of the approximated model, simulations are conducted by changing the length, width, and height of the sandwiches modelled using both the approximation and exact geometry. Fatigue life analyses are conducted on two of the candidate floors. Both are comfortably within the limit imposed by the standards. The success of a design in this thesis hinged on the validity of the honeycomb model. The test results reject the honeycomb model as the deflection is significantly higher than simulated. Plastic deformation has also occurred, though more probably due to the deformation local at the weld. Even though honeycomb is demonstrated not to be able to meet the requirements on its own, sandwich as a category of structure should not be discounted as a whole. Environmental factor is a drawback for using large quantities of aluminium even considering the weight difference between the design and the original steel structure. / Rörlighet är en symbol för värdighet. En plattformslyft gör att alla med olika fysiska förmågor kan röra sig vertikalt med lätthet. För närvarande är plattformslyften av Aritco Lift gjord av stålplåt. Den är tung och därför svår att hantera. Sandwichdesign undersöks för att se om och, om möjligt, hur mycket egenlastreduktion kan åstadkommas. En simuleringsmodell tas fram i SolidWorks för att underlätta materialvalet och sandwichdesignen. Sandwichkonstruktioner av aluminiumplåtar undersöks, även om stålplåt fungerar också. Ingen rekommendation om kärnmaterial kan ges. Fogningsmetoder undersöks i SolidWorks för att sammanfoga det 35 mm tjocka sandwichbaserade golvet till lyftkroppen utan att skapa en stor nedböjning. Flera allmänna riktningar utreds. Ingen av dessa gav tillräckligt tillfredsställande resultat, trots att två riktningar har gett resultatsom ligger mycket nära kraven. Simuleringar utförs på en 40 mm tjock sandwich med ett av de optimala fogalternativen, vilket ger bättre viktbesparingar och nedböjningsresultat än förväntat. Vissa bikakeegenskaper uppskattas med formler snarare än att mätas eller simuleras direkt. För att kvantifiera hur betydande avvikelsen av den approximerade modellen är, genomförs simuleringar där längden, bredden och höjden ändras på de modellerade sandwicharna med användning av både approximationer och data från den exakta geometrin. Utmattningsanalyser genomförs på två av designförslagen. Båda är bekvämt inom de gränser som ställs av standarderna. Framgången för en design i denna avhandling hängde på giltigheten av honeycomb-modellen. Testresultaten förkastar modellen eftersom nedböjningen är betydligt högre än simulerad. Plastiskdeformation har också förekommit, men troligen på grund av den lokala deformationen vid svetsen. Även om honeycomb har visat sig inte kunna uppfylla kraven på egen hand, bör sandwich som strukturkategori inte bortses från som helhet. Miljöfaktorn är en nackdel för att använda stora mängder aluminium även med tanke på viktskillnaden mellan konstruktionen och den ursprungliga stålkonstruktionen.

Computational models of musculoskeletal joints and limbs can provide useful information about joint mechanics. Validated models can be used as a predictive device for understanding joint function and serve as a clinical tool for predicting the outcome of surgical procedures. A new computational modeling approach was developed for simulating joint kinematics that are dictated by bone/joint anatomy, ligamentous constraints, and applied loading.Three-dimensional computational models of the lower leg were created. Model development involved generating three-dimensional surfaces from CT images, followed by importing these surfaces into SolidWorks and COSMOSMotion. ThroughSolidWorks and COSMOSMotion, each bone surface was created into a solid object and positioned, necessary components added, and simulations executed. Three dimensional contacts inhibited intersection of the bones during motion. Ligaments were represented as linear springs. Model predictions were then validated by comparison to three different previously performed cadaver studies (syndesmotic injury study, inversion stability study, and mechanical laxity study) and one simultaneously performed cadaver study (anterior drawer test).In the syndesmotic injury study, the relative motion between the tibia and fibula in intact, transected, and repaired states was measured under the application of an external rotation of the ankle. The inversion stability study focused on the elongation behavior of lateral ankle ligaments and inversion range of motion during the application of an applied load. The mechanical laxity study focused on differences in anterior/posterior and inversion/eversion movement in intact and transected states. Each computational simulation was placed under the same conditions as its respective cadaver study and revealed a capability to predict behaviors in each case. The syndesmotic injury model was able to predict tibia1 rotation, fibular rotation, and anterior/posterior displacement. In the inversion simulation, calcaneofibular ligament extension and angles of inversion compared well. The laxity study showed increases in anteroposter motion after the transactions of the ATFL and CFL; and diffenences in inversion after the transaction of the CFL. The Anterior Drawer simulation produced similar ligament elongations and loads when compared to cadaver studies.Overall, the computational models were able to predict joint kinematics of the lower leg with particular focus on the ankle complex. Additional parameters can be calculated through such models that are not easily obtained experimentally such as ligament forces, force transmission across joints, and three-dimensional movement of all bones.

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