Capstone Project Essay
PROJECT ISSUE NO 1
The capstone project chosen has been thoroughly analyzed multiple times in various ways assuring the safety and security of the person sitting on the wheel chair. Constraint is defined as a form of restriction which prohibits either socially, physically or financially. Constraints can be found in various forms for instance with respect to our project the constraints are both social and physical. The materials chosen have been checked with respect to their load bearing capacities as earlier during market research it was found that there are two materials abundantly available which were steel and aluminum. Since steel was found in various shapes and sizes in comparison to aluminum and more importantly its load bearing capacity …show more content…
was far greater than that of aluminum so we’ve chosen it ensuring not only the safety and security of the person but the wheel chair as well. It will also guarantee stability making it reliable for its users. Now considering the specifications and limitations of our stair climbing wheel chair project, we can confidently say that it’s power limitations are enough rather more than enough to easily support any person slightly above average weights going upwards or downwards with ease. For now the materials and the design specifications can easily support up to 60Kgs which is equivalent to maximum load for an ordinary person car lift.
Considering the tensile strength of even the nominal type of steel which is about 400-550 MPA, the amount of load mentioned above can be easily supported by it.
The gear mechanism used in supporting the motion of the three wheels not only ensures its stability and safety of system but also provides smoothness in motion. Modification has been done from previous designs of straight frame to curved frames, since the straight wheel was took more thrust to tilt the wheel frame to engage next planetary wheel therefore to avoid those sudden jerks in motion the length of the wheel frame has been shortened and curved so as to provide smoothness and avoid even the slightest risk of failure of system. Now there is no chance of colliding with the stairs during its motion. Overall all the chances of failures or which might have prohibited the smooth mobility of the wheel chair have been removed as much as possible.
Ensuring the reliability, effectiveness, evaluating strength and durability isn’t just for the sake of safety only rather a way of compiling necessary knowledge regarding users which might include designers, providers, producers etc. Keeping updated data of the tests will assist in improvising the wheel chair design further as like there is always room of improvement in all spheres of life similarly there will be always room for our design irrespective of how flawless we might make
it.
It is recommended for every country to develop its own wheelchair standards to ensure a reasonable quality, for instance by using the ISO 7176 series of standards as a basis. When developing national standards, it is important to consider the weights and sizes of the users, typical use, available testing equipment and available wheelchair technology. There have been standards developed for the wheelchairs by the International Organization for Standardization (ISO) known as the ISO 7176 series. The whole series identifies a terminology and various testing methods for checking the wheelchair size, strength, durability etc. So all the constraints can be easily defined by first opting either a tailored series from the standards or modifying it to one of its own.
The capstone project chosen has been thoroughly analyzed multiple times in various ways assuring the safety and security of the person sitting on the wheel chair. Constraint is defined as a form of restriction which prohibits either socially, physically or financially. Constraints can be found in various forms for instance with respect to our project the constraints are both social and physical. The materials chosen have been checked with respect to their load bearing capacities as earlier during market research it was found that there are two materials abundantly available which were steel and aluminum. Since steel was found in various shapes and sizes in comparison to aluminum and more importantly its load bearing capacity …show more content…
was far greater than that of aluminum so we’ve chosen it ensuring not only the safety and security of the person but the wheel chair as well. It will also guarantee stability making it reliable for its users. Now considering the specifications and limitations of our stair climbing wheel chair project, we can confidently say that it’s power limitations are enough rather more than enough to easily support any person slightly above average weights going upwards or downwards with ease. For now the materials and the design specifications can easily support up to 60Kgs which is equivalent to maximum load for an ordinary person car lift.
Considering the tensile strength of even the nominal type of steel which is about 400-550 MPA, the amount of load mentioned above can be easily supported by it.
The gear mechanism used in supporting the motion of the three wheels not only ensures its stability and safety of system but also provides smoothness in motion. Modification has been done from previous designs of straight frame to curved frames, since the straight wheel was took more thrust to tilt the wheel frame to engage next planetary wheel therefore to avoid those sudden jerks in motion the length of the wheel frame has been shortened and curved so as to provide smoothness and avoid even the slightest risk of failure of system. Now there is no chance of colliding with the stairs during its motion. Overall all the chances of failures or which might have prohibited the smooth mobility of the wheel chair have been removed as much as possible.
Ensuring the reliability, effectiveness, evaluating strength and durability isn’t just for the sake of safety only rather a way of compiling necessary knowledge regarding users which might include designers, providers, producers etc. Keeping updated data of the tests will assist in improvising the wheel chair design further as like there is always room of improvement in all spheres of life similarly there will be always room for our design irrespective of how flawless we might make
it.
It is recommended for every country to develop its own wheelchair standards to ensure a reasonable quality, for instance by using the ISO 7176 series of standards as a basis. When developing national standards, it is important to consider the weights and sizes of the users, typical use, available testing equipment and available wheelchair technology. There have been standards developed for the wheelchairs by the International Organization for Standardization (ISO) known as the ISO 7176 series. The whole series identifies a terminology and various testing methods for checking the wheelchair size, strength, durability etc. So all the constraints can be easily defined by first opting either a tailored series from the standards or modifying it to one of its own.