Presentation on theme: "After a product has been selected, a non- destructive Functional Analysis is performed. The products purpose is identified. Observations are made to determine."— Presentation transcript:
After a product has been selected, a non- destructive Functional Analysis is performed. The products purpose is identified. Observations are made to determine how the product functions. These observations are recorded in detail. The systems inputs and outputs are identified. A theory of operations is developed and recorded.
Prepare a concise theory of operations that describes how you think your product functions. You will contrast this to what you discover after you disassemble your product. A theory of operation is a description of how the product works and how it is used. NOTE: you can prepare this in Word as part of your technical report. That report is due at the end of the project but this is due sooner!
Source: Airmar technology. (2012, March 28). Retrieved from http://www.airmartechnology.com/uploads/installguide/Theory_of_ Operations.pdf An example: Theory of Operation for a fish finder. What does it do (purpose)? How is it used? What is the product? What are the major parts? Simple Machines? How does it work (your theory)?
A black box systems model is used to identify what goes into and out of the product in order to make it work as a system. The black box is a model used to represent the products internal components or processes, which may be unknown at this point.
It is a non-destructive method of analysis used to identify the sequential operations of a product or system and identify the inputs and outputs of those systems. Black Box Product Function OutputInputs
Describe the expected purpose of the product. The purpose of a toothbrush is to clean teeth and gums to prevent tooth and gum decay. Water and a cleaning paste are also used in with the brush.
Black Box Product Function OutputInputs Hand motion Energy Toothpaste Water Sound Heat Waste Clean teeth and gums Batteries Motor Switch Circuit board
The engineer makes an annotated sketch of the product and labels all of the visible components. This information is used to write up a detailed analysis of the objects sequential operation, or function.
1. Describe the product and its purpose or primary function. 2. Sketch an isometric pictorial of the product in your engineers notebook (both students do their own), and label the individual components. Describe and label the visible components. If you are not sure what a particular component is called, make up a descriptive label. Scan this for use later. 3. Create a black box systems model and identify the system inputs and outputs. Label the black box. 4. Black box: Make an educated guess about the products function that you cannot identify, because the mechanical components are hidden from plain view. Your theory of operation must include both the known (what you can see) and the unknown (what you can guess). 5. Describe which simple machines are used and how they help make the product perform its primary function. 6. This documentation should be in MS-Word and will become part of your technical report. Until then, you must present it as a PPT slide with illustrations.
Machines consist of elements, such as wheels and axles, that work together (inputs) to transmit force and produce work (output). No matter how complex, all machines are based on one or more simple machines that change the direction or magnitude of an applied force. This change in force is referred to as mechanical advantage. Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Explore types of levers by clicking
Go to my Skyview web pages and click on the Simple Machines page Review the concepts You will be expected to identify the simple machines in your product in your analysis.
Watch the short video SX-70 on my website link. In your ENB take notes on the sequence of operations necessary to perform its basic function. After viewing the video, think about how your product works or functions and answer the following: What are the sequence of operations? What are the simple machines involved? How does your product work? Create 1-2 sketches and label them as in the video. What else you would need to know or see in order to feel confident in the accuracy of your functional analysis? What is your theory about how the film works?