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Author Topic: FUNDAMENTALS OF DESIGN AND MANUFACTURING STUDY NOTES  (Read 10274 times)

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November 01, 2012, 12:30:27 PM
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SECTION-A (AN 201/AD 301)
FUNDAMENTALS OF DESIGN AND MANUFACTURING


1.Design and manufacturing-complete.pdf

2.Fundamentals of design and manufacturing.docx

3.DaM.zip

Thanks and Regards
half 3vil

"knowledge is now free at last, enjoy knowledge and life and work for everybody else"
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« Last Edit: January 01, 1970, 04:00:00 AM by Guest »


"knowledge is now free at last, everything should be free
from now on, enjoy knowledge and life and work for everybody else"

                                                             +ORC
http://http://amiestudenthelper.blogspot.in
November 02, 2012, 07:58:42 AM
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« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 02, 2012, 03:20:50 PM
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Quote from: "sharda verma"
pls send me these notes on my email: [email protected]

Thanks and Regards
half 3vil


"knowledge is now free at last,enjoy knowledge and life and work for everybody else"
                                                             +ORC
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
"knowledge is now free at last, everything should be free
from now on, enjoy knowledge and life and work for everybody else"

                                                             +ORC
http://http://amiestudenthelper.blogspot.in
November 19, 2012, 06:29:52 PM
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Variant Design
This type of design demands considerable scientific training and design ability, in order to modify the existing designs into a new idea, by adopting a new material or a different method of manufacture. In this case, though the designer starts from the existing designs, the final product may be entirely different from the original product.
E.g. converting mechanical watches into quartz watches. Here a new technology is adopted.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:32:18 PM
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Adaptive Design
In most design situations the designer's job is to make a slight modification of the existing design. These are called adaptive designs . This type of design needs no special knowledge or skill. E.g. converting mechanical watches into a new shape.


Original Design
Here the designer designs something that did not exist previously. Thus, it is also called new design or innovative design. For making original designs, a lot of research work, knowledge and creativity are essential. A company thinks of new design when there is a new technology available or when there is enough market push. Since this type of design demands maximum creativity from the part of the designer, these are also called creative designs.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:33:14 PM
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Selection Design.
It involves choosing one or more items from a list of similar items. We do this by using catalogues.
Eg. -Selection of a bearing from a bearing catalogue
-Selection of a fan for cooling equipment
-Selecting a shaft.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:34:17 PM
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•  Configuration / Layout / Packaging Design

In this type of problem, all the components have been designed and the problem is how to assemble them into the completed product. This type of design is similar to arranging furniture in a living room.
Consider the packing of electronic components in a laptop computer. A laptop computer has a keyboard, power supply, a main circuit board, a hard disk drive, a floppy disk drive and room for two extension boards. Each component is of known design and has certain constraints on its position. For example, the extension slots must be adjacent to the main circuit board and the keyboard must be in front of the machine.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:35:36 PM
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Product Planning
Planning is the process used to develop a scheme for scheduling and committing the resources of time, money and people. A plan shows how a project will be initiated, organized, co-coordinated and monitored. A product plan is a decision-making as regards to the design and manufacture of a product, by considering the revenues from different products. For example assume that a company already manufacturing 3 products, say P 1 , P 2 and P 3 identifies a need to design a new product ‘N'. Owing to the design and manufacture of the new product, the production volume, and hence revenue from products P 1 , P 2 ,and P 3 may be affected (due to re-allocation of company resources such as raw materials, machineries). In this situation, the company has to decide a time-schedule for the design and manufacture of the new product. Such plan made by the management is called the product plan. It must contain the time-as well as resource allocation for each of the products. More over it will result in optimum and efficient use of resources. After the product plan in made, the management begins a project for a new product design.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:36:43 PM
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Organisational Structure of Design Teams
Since a design project requires individuals with different fields of expertise, they can be organised into different structures. Listed below are the five organisational structures. The number in the bracket shows the percentage of design projects that use that particular organisation structure.
1. Project matrix, (28%)
It is an organisation structure having the features of project and matrix organisations.
2. Functional matrix (26%)
It is another organisational structure obtained by combining functional as well as matrix organisations.
3. Balanced Matrix (16%)
Here the project manager and functional manager work together. A project manager is assigned to oversee the project, and the responsibility and authority for completing the project rests with functional managers.
4. Project Team (16%)
A project manager is put in charge of a project team composed of a core group of personnels from several functional areas or groups assigned on a full time basis.
5. Functional Organisation (13%)
Each project is assigned to a relevant functional area or group within a functional area. A functional area focuses on a single discipline.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:38:13 PM
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Hierarchy of Human needs:-
Maslow developed a hierarchy of human needs as given below
1. Physiological needs
- These are the basic needs of the body- For example, thirst, hunger, sex, sleep etc.
2. Safety and security needs
For a person whose physiological needs are met, the new emerging needs are safety needs. These include, protection against danger, threat etc.
3. Social needs
Once the physiological and safety needs are met, the next dominant need is social need. For example he/she want to love and be loved, he want to be “in group”, etc.
4. Psychological needs
These are the needs for self-respect and self- esteem, and for recognition.
5. Self-fulfillment needs
These are the needs for the realisation of one's full potential through self-development, creativity, and self-expression.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:39:12 PM
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What is a need?
A need can be defined as a personnel unfulfilled vacancy which determines and organizes all psychological and behavioral activities in the direction of fulfilling the vacancy
A product can be product and marketed only if it is ‘needed' by the customer. A person buys a pen because he ‘needs' to write. A patient ‘needs' something that can cure his illness. These examples show that needs are nothing but a scarcity or problem or wants felt by a person, device or a system. In fact a designer's goal is to find solutions to such problems.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:40:28 PM
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Difference between Creative Designs & Engg, Designs:-
•  Intelligence is not a must for creative design-but the same is desirable in Engg. Design.
•  Creative design is based on use of analogy and synthesis of alternatives – but engineering design is based on proven laws and past experience.
•  Creative design involves phases like incubation, illumination – but no such philosophy is followed in engineering designs.
•  Creative person is highly intuitive and independent in thinking and usually resists working in group – but engineering designers like teamwork.
•  Customs, habits and traditions are enemies of creativity – but the same are required in engineering design.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:41:20 PM
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Common features between Creative Design & Engg. Design:-
•  The preparation phase in creative design and need analysis in Engg. Design is more or less common. Both steps deal with analyzing the need.
•  In both design methods brainstorming and Synetics can be applied.
•  Reviewing is applicable in both design methods.
•  For both deigns, the success depends on the clarity with which the need statement is prepared.
•  Testing and inspection is applicable for both designs.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 06:43:53 PM
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Morphology of Design:-
Morphology means ‘a study of form or structure'. Morphology of design refers to the time based sequencing of design operations. It is a methodology of design by which ideas about things are converted into physical objects. The logical order of different activities or phases in a design project is called the morphology of design.

Design Process- Simplified Approach
A simplified approach to designing as outlined by Morris Asimow. According to him the entire design process in its basic forms consists of five basic elements.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
November 19, 2012, 07:06:07 PM
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Configuration / Layout / Packaging Design:-
In this type of problem, all the components have been designed and the problem is how to assemble them into the completed product. This type of design is similar to arranging furniture in a living room.
Consider the packing of electronic components in a laptop computer. A laptop computer has a keyboard, power supply, a main circuit board, a hard disk drive, a floppy disk drive and room for two extension boards. Each component is of known design and has certain constraints on its position. For example, the extension slots must be adjacent to the main circuit board and the keyboard must be in front of the machine.
« Last Edit: January 01, 1970, 04:00:00 AM by Guest »
 

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