Runner design and sizing is one of the most important aspect of mold design. This blog covers the basics of runner, function and shapes. Next blog will cover the design aspects.
As a start of the feed system discussion, sprue bush is the first part in mold design which is explained in this blog. Sprue bush design is important but seldom given any thought during design […]
A brand new topic on Jigs and Fixtures which are widely used in the all manufacturing industries. In this blog, you will learn the basics of Jig & Fixture, application, classification and types. More on […]
Blog discusses the basics of composites and introduction to terminology of composite materials. Composites provide unique properties for applications and growing trend in plastics.
This blog introduces to the theory of fracture mechanics for plastics. Although this is an intro, it can be too theoretical for some, but necessary to understand the concepts.
Creep under constant strain is not a practical way of evaluating a material performance. Boltzmann superposition principle explains the different stress loading profile to consider.
This blog explains superposition principle, shift factor and Arrhenius, WLF equation. This principle is very useful to get creep compliance and stress relaxation curves for different test temperatures with reference temperature curves.
Creep modulus is an important design parameter for selecting plastics for long term use. This blog takes you step by step of the importance and curves to use for design purposes.
This blog discusses crazing, shear yielding for amorphous polymers and slipping, twinning for semi-crystalline polymers. Deformation phenomenon explained thoroughly.
Polymer yield stress depends on strain rate and temperature of the testing. This blog explains the both the factors and also Eyring’s model to predict the yield stress during polymer development.
Polymer deformation mechanisms helps to understand how amorphous and crystalline materials modulus can be predicted. A difficult topic but explained in layman terms.
Here is the blog on various polymers behavior and stress/strain curves. Also covered topics are cold drawing, strain hardening and draw ratio of the polymers.
In this blog, you will learn about the how to model polymer behaviors with models. This is an intro to predict creep & stress relaxation behaviors.
In continuation of “Four Regions of Viscoelastic Behavior”, this blog takes about the Creep and Stress Relaxation Response Diagrams in four mechanical states of polymer. Yes, It is very theoretical subject but important to know […]
This blog is an intro to viscoelastic equations which are key for future blogs. Some of the equations are used to create viscoelastic models.