Block on Ring Tribometer Option

Block on Ring test is a widely used technique that evaluates the sliding wear behaviors of materials in different simulated conditions, allows reliable ranking of material couples for specific tribological applications. Sliding wear often involves complex wear mechanisms taking place at the contact surface, such as adhesion wear, two-body abrasion, three-body abrasion and fatigue wear. The wear behavior of materials is significantly influenced by the work environment, such as normal loading, speed, corrosion and lubrication. A versatile tribometer that can simulate the different realistic work conditions will be ideal for wear evaluation.

Compression Set Measurement With 3D Profilometry

Compression set measurement of rubbers progressively recover their shape after the compressive stress is removed. Accurate in situ monitoring of the shape evolution during the compression set period can provide important insight into the mechanism of material recovery. Moreover, real-time monitoring of surface morphologies is very useful in various materials applications, such as paint drying and 3D printing. The Nanovea 3D Non-Contact Profilometers measure the surface morphology of materials without touching the sample, avoiding introducing additional scratches or shape alteration which may be caused by contact technologies such as sliding stylus.

Stress Relaxation Measurement With Nanoindentation

As per ASTM E 328, Standard Test Methods for Stress Relaxation for Materials and Structures, external force is initially applied on the material or structure to reach a constant constraint, and then the change in the external force necessary to maintain this constraint is measured as a function of time. The major difficulty in the stress relaxation test is maintaining the constant constraint. The nanoindentation module of Nanovea Mechanical Tester accurately measures the stress relaxation by applying the close loop control of the load with ultra-sensitive load cell and piezo. The piezo reacts real-time to keep the constraint constant while the change in load is measured and recorded by the high precision load cell. This measurement can be performed on virtually all types of materials without the stringent requirement of sample dimension. Multiple stress relaxation tests can be performed on the same flat sample to ensure the test repeatability, which substantially reduces the cost on sample manufacturing and machining.

App Notes