PL8701 - PLASTICS PRODUCT DESIGN (Syllabus) 2017-regulation Anna University

PL8701 - PLASTICS PRODUCT DESIGN (Syllabus) 2017-regulation Anna University

PL8701	PLASTICS PRODUCT DESIGN	LPTC

3003

OBJECTIVES: To enable the students

• To understand the concepts and features of Plastic Product design.
• To learn the basic concepts of designing with plastics for various loading applications, structural elements and joints.
• To understand the concepts of composite product design.

UNIT I	PRODUCT DESIGN REQUIREMENT	9

Introduction to Product Design – Principles & Methodical approach for Product Design – Design Process – Material selection – Process selection – Safety Factors in Product Design- – Product Design Appraisal- Geometric Dimensioning and Tolerances on Product-Product Design criteria – Structural, Environmental, Assembly, Aesthetics & Decoration- Design for Manufacture & Assembly (DFMA)- Tooling Aspects on Product Design – Cost Analysis for Product Design

UNIT II	PRODUCT DESIGN FEATURES	9

Wall thickness – variations in wall thickness – suggested wall thickness for various plastics materials – Taper & Draft – Design of radii, fillets, ribs and bosses- Shrinkage - Fits & Tolerances- External & Internal Undercuts

UNIT III	HOLES & THREADS	9

Moulded Holes & its types - Drilled and tapped holes- Hinges – Types - Design of Integral hinges. Moulded threads – thread types- Inserts – materials – selection of metal for inserts –location of inserts in the part – moulded inserts – pressed in inserts.

UNIT IV	ASSEMBLY FEATURES	9

Part Consolidation-Mechanical Fasteners- Snap Fits Joints- Snap Fit Theory, Annular and Torsional Snap fits, Assembly Procedures and Issues with Snap Fits- Welding -Ultrasonic Welding, Vibration and Hot-Plate Welding, Spin Welding- Bonding - Solvent and Adhesive Bonding-Retention Features-Alignment Features- Orientation-Expansion Differences- Tolerances – Introduction to In-mould Assembly.

UNIT V	DESIGN FOR COMPOSITES	9

Design Criteria for Composites- Cost, Size, Mechanical Properties, Repeatability and Precision, Damage Tolerance and Durability, Environmental Constraints - Design allowables- Need for Design allowables- development of design allowables- Important factors that affect the selection of allowables - Specific techniques used in the statistical development of allowable values.

TOTAL : 45 PERIODS

OUTCOMES:

• Students will acquire the knowledge and principles of basic product design
• Students can able to design the plastics for various applications.

TEXT BOOKS:

1. Robert A. Malloy, “Plastic Part Design for Injection Moulding”, Hanser Publishers, Munich Vienna, New York, 1994.
2. R.D.Beck “Plastics Product Design”, Van Nostrand Reinhold, New York,1980

REFERENCES:

1. Belofsky, H, “Plastics Product Design and Processing Engineering, Hanser Publishers, Munich Vienna New York, 1994.
2. Sidney levy J. Harry Dubois, “Plastics Product Design Engineering Hand Book”, Second Edition, Chapman and Hall Ltd, 1984
3. Paul A. Tres, “Designing Plastic Parts for Assembly”, 2nd Revised Edition, Hanser Publishers, Munich Vienna New York, 1994
4. Alfredo Campo E. “The Complete Part Design Handbook for Injection Molding of Thermoplastics”, Hanser Publishers, Munich, 2006
5. Daniel B. Miracle and Steven L. Donaldson “Composites” Volume 21, ASM Handbook,ASM International, 2001.
6. P.K. Mallick, “Fiber-Reinforced Composites: Materials, Manufacturing, and Design”, Third Edition, CRC Press 2007