OPTIMAL PRODUCTION VOLUME OF RUBBER GLOVES MOLD FOR RUBBER GLOVES PRODUCTION PLANNING

The production process of rubber glove is the continuous production line which the hand-shaped ceramic molds are installed and dipped into the concentrated latex to form the rubber gloves. Since, the rubber gloves are diverse in terms of size, surfaces and types of latex, the multiple molds and latex are changed and used in a production process in order to produce rubber gloves from customer requirement. Thus, the changing of mold is extremely complex for production ratio which the rubber glove production planning will be employed to meet anticipate customer orders. This research therefore develops the mathematical model to find the optimal quantity of molds and rubber gloves production planning. Finally, the developed model is applied to an example data set to find the minimum total volume of rubber gloves in every mold for keeping the minimal volume of inventory.The production process of rubber glove is the continuous production line which the hand-shaped ceramic molds are installed and dipped into the concentrated latex to form the rubber gloves. Since, the rubber gloves are diverse in terms of size, surfaces and types of latex, the multiple molds and latex are changed and used in a production process in order to produce rubber gloves from customer requirement. Thus, the changing of mold is extremely complex for production ratio which the rubber glove production planning will be employed to meet anticipate customer orders. This research therefore develops the mathematical model to find the optimal quantity of molds and rubber gloves production planning. Finally, the developed model is applied to an example data set to find the minimum total volume of rubber gloves in every mold for keeping the minimal volume of inventory

Design and Development of a Soft Robotic Gripper for Fabric Material Handling

Fabric and textile materials are widely used in many industrial applications, especially in automotive, aviation and consumer goods. Currently, there is no semi-automatic or automatic solution for rapid, effective, and reconfigurable pick and place activities for limp, air permeable flexible components in industry. The production of these light-weight flexible textile or composite fiber products highly rely on manual operations, which lead to high production costs, workplace safety issues, and process bottlenecks. As a bio-inspired novel technology, soft robotic grippers provide new opportunities for the automation of fabric handling tasks. In this research, the characteristics of fabric pick and place tasks using the clamping grippers are quantitatively investigated. Experiments on a carbon fiber fabric are performed with a collaborative robot to explore the damage, slippage, draping, and wrinkling during basic pick and place operations. Based on the experimental results, multiple soft robotic gripper configurations are developed, including a compliant glove set that can improve the performance of traditional rigid grippers, an elastomer-based soft gripper, and a linkage-based underactuated gripper. The gripper designs are analyzed and refined based on finite element simulation. Prototypes of the grippers are fabricated using a rapid tooling solution for an overmolding strategy to verify their functionality. Through the research, it is proven feasible to reliably perform flexible fabric handling operations using soft grippers with appropriate toolpath planning. Finite element simulation and additive manufacturing have shown to be useful tools during the gripper design and development procedure, and the methodologies developed and applied in this work should be expanded for more flexible material handling challenges

C6 Wheels

This document details the C6 Wheels project being undertaken for senior design. The objective is to design and manufacture carbon fiber reinforced polymer wheels for the Cal Poly Formula Society of Automotive Engineers (FSAE) team. The wheel shells will be used on FSAE’s competition vehicles. FSAE requested the wheels to improve the handling characteristics of their vehicles by reducing the unsprung and rotational mass. They have attempted carbon fiber wheels previously but have not yet run any on their vehicles. FSAE specifically proposed the design of carbon fiber shells with an aluminum center as opposed to full carbon fiber wheels on the recommendation of the 2018 attempt. C6 Wheels is responsible for designing the wheel shells—including interfacing with the aluminum centers, designing and manufacturing the mold tooling, and molding of the carbon fiber wheel shells—including any post machining. The aluminum centers are being designed and manufactured by the FSAE team

The comparative analysis of biological growth and common cleaners based on organism identification and biological mechanisms

Biological growth on stone monuments and buildings is a common concern in architectural conservation. It is usually removed through the use of commercial biological growth cleaners. There are a number of these products on the market whose efficacy can vary by growth type and substrate. With years of experience a conservator may develop a sense of what products work best based on the type of biological growth present. However, most of this knowledge is based on trial-and-error in the field. This thesis takes a more systematic approach to cleaning biological growth. Popular commercial products owe their efficacy to the susceptibility of different biological organisms to the active ingredients present in the cleaner. Different types of organisms have different reactions and immunities to certain chemicals, or are affected to different degrees by the cleaners and application methods. Therefore, not all cleaners are equally effective on all types of biological growth. Past studies on the subject of biodeterioration have taken two approaches: looking at the DNA identification growth found on stone, and testing the responses of different forms of biological growth to commercially available biocides. These commercially available biocides are not the same as commercially available cleaners that work through biocidal mechanisms, with cleaners generally having lower toxicity and are subject to less strict government regulation. This thesis compares and analyzes the alterations caused by each chemical agent on specific forms of biological growth. This was accomplished through the collection and propagation of samples of biological growth and laboratory testing. Several forms of biological growth, including algae, lichen, and moss were first visually identified using state and local databases with information such as cellular structure, growth type, and geographic location. Algae samples were grown in petri dishes and tested along with larger samples of lichen and moss in the laboratory. The samples were monitored before, during, and after treatment. The effects of the cleaners were analyzed and compared to understand any differences between the reactions of cleaners and growths, and to what each growth was most and least vulnerable. The long-term potential for regrowth was also considered through the re-examination of sites cleaned for a prior thesis in 2011. Three sites cleaned with several of the cleaners included in this thesis were examined three years after cleaning to evaluate the long-term effects of the cleaners. The results from this thesis can assist in the design of custom biological growth treatment plans based on the taxonomic classification of biological growth and the substrate on which it grows

Mixed Martial Arts Training Equipment and Footwear Needs

97 page

Mixed Martial Arts Training Equipment and Footwear Needs

97 pagesMartial arts are deeply rooted in many cultures throughout the world. In ancient Greece and ancient Sumeria, boxing and wrestling competitions were common and wildly celebrated (The History of MMA, 2019). Martial arts spread throughout the world, branching into a wide variety of grappling and striking styles that garner competition between one another to find out which is the most effective. As a sport, martial arts can be aggressive and violent while simultaneously rooted in respect and the mutual pursuit of growth (Jeet Kune Do, 2020). Modern mixed martial arts (MMA) continue to pursue that growth alongside the following question- What is the most effective blend of these arts to submit or subdue an opponent? The search for the answer to this question pits competitors against one another in one of the most dangerous sports in the world-Competitive MMA (Health Fitness Revolution, 2020). Competitive MMA demands relentless training to insure the highest level of skills and conditioning possible (Fitnescity, 2020). The training itself requires a certain level of risk, and the equipment used to train needs be as finely tuned as the athletes who use it. This paper will investigate how MMA athletes train by explaining the history of the sport, athlete needs, the current product environment, and the potential for innovative improvement in this product area. This research will lay the foundation for the design and creation of innovative training equipment and footwear that will improve safety in MMA training. The purpose of this design innovation is to look to the future of equipment and footwear for the elite male MMA athlete to optimize training and reduce injuries. This will be the first project to apply additive and generative design techniques to customize fit and function in MMA equipment, and focus on footwear that adapts to the needs of the elite MMA athlete. The physical ability of the elite MMA athlete is improving faster than the equipment that they use, in order to protect them properly their equipment needs to catch up and improve at the same rate

A hybrid, wearable exoskeleton glove equipped with variable stiffness joints, abduction capabilities, and a telescopic thumb

Robotic hand exoskeletons have become a popular and efficient technological solution for assisting people that suffer from neurological conditions and for enhancing the capabilities of healthy individuals. This class of devices ranges from rigid and complex structures to soft, lightweight, wearable gloves. In this work, we propose a hybrid (tendon-driven and pneumatic), lightweight, affordable, easy-to-operate exoskeleton glove equipped with variable stiffness, laminar jamming structures, abduction/adduction capabilities, and a pneumatic telescopic extra thumb that increases grasp stability. The efficiency of the proposed device is experimentally validated through five different types of experiments: i) abduction/adduction tests, ii) force exertion experiments that capture the forces that can be exerted by the proposed device under different conditions, iii) bending profile experiments that evaluate the effect of the laminar jamming structures on the way the fingers bend, iv) grasp quality assessment experiments that focus on the effect of the inflatable thumb on enhancing grasp stability, and v) grasping experiments involving everyday objects and seven subjects. The hybrid assistive, exoskeleton glove considerably improves the grasping capabilities of the user, being able to exert the forces required to execute a plethora of activities of daily living. All files that allow the replication of the device are distributed in an open-source manner

Utilization of Resin-Based Additive Manufacturing for Investment Casting

Dr. Xuan Wang, an Industrial & Manufacturing Engineering (IME) professor at California Polytechnic State University, San Luis Obispo, has sponsored the resin-based 3D printing investment cast senior project. The objective of the project was to thoroughly research the process and document the findings of using a resin-based 3D printed part as the pattern for investment casting. While this manufacturing process is not necessarily a new idea, the lack of technical research and documentation limits its ability to be reproducible. The research portion of the senior project included analyzing the limitations to the printing/casting manufacturing process. Measurements of part thicknesses, hole radii, depths, protrusion heights, and fillets were quantitatively studied, and surface finish, pattern clarity, and overall success were determined qualitatively. Three test coupons were manufactured and measured, both for limitations and statistical analysis on growth rates. The features measured for a statistical analysis of the growth included side lengths and diameters for intrusions and extrusions. Once the manufacturing process was sufficiently analyzed, the findings were used to produce a curriculum package for the IME 470 foundry course at Cal Poly. This included a detailed lab manual and video tutorial to promote student learning, as well as a library of CAD models for the students to manufacture. This library contains several models, including dice, rings, and die- casting molds for actions figures. To validate the completeness of the curriculum materials, a group of five students were walked through the process, and useful feedback was gathered to improve the course contents. In total, the project was a success for determining the technology’s limitations and providing educational content to the IME 470 course

Occupational diseases: a guide to their recognition

Revised edition."Occupational diseases are discussed in terms of occupational health hazards. The purpose of the text is to make available information needed for timely recognition of symptoms of occupational diseases. The text covers routes of entry and modes of action, biological hazards, dermatoses, diseases of the airways, plant and wood hazards, chemical hazards, chemical carcinogens, pesticides, and such physical hazards as radiation, atmospheric variations, and oscillatory vibrations. Sources of consultation and references are included." - NIOSHTIC-2Edition for 1964 by the Institute under its earlier name, Division of Occupational Health.editors, Marcus M. Key ... [et al.] manuscript editor, Lorice Ede.Includes index.Bibliography: p. 534-556