Products link Mechanics Heat & Thermodynamics Electromagnetics Electronics & Communication Optics Experiment Instruments Advanced Physics Spectroscopic Instruments Light Sources Opto-Mechanics Mechanics Experiments LEMI-10 Young's Modulus-Stretching LEMI-12 Young's Modulus-Hall Sensor LEMI-13 Young's Modulus-Resonance LEMI-16 Simple Pendulum LEMI-18 Rotational Moment of Inertia LEMI-21 Simple Harmonic Motion LEMI-25 Pendulum & Projectile Apparatus LEMI-30 Liquid Surface Tension LEMI-32 Viscosity-Falling Ball LEMI-51 Sound Velocity LEMI-60 Double-grating Experiments LEMI-61 Weak Vibration Apparatus Schematic of system 1. Base line, 2. Reading microscope, 3. Support edge, 4. Sample, 5. Copper lever (with Hall sensor on the other end), 6. Magnet mount, 7. Magnets, 8. Adjustable holder, 9 Weights. Hall sensor and magnets

LEMI-12

# Young's Modulus Apparatus - Hall Sensor Method

Features
Hall micro-displacement sensing
Simple structure and stable performance
High accuracy (error <3%)
Ideal demonstration system

Introduction

When rigid materials are subject to particular stress or forces, deformation (compressed, twisted, stretched, etc) may occur. For many materials, when suffered from force or stress, the resisting or restoring force that tends to return the material to its original shape is proportional to the deformation. Young's Modulus, E, is a constant that describes the material's mechanical property of stiffness and is expressed as the ratio of stress to strain for a material experiencing tensile or compressive stress.

This apparatus is designed to study the deformation characteristics of thin metal sheet samples under load. Deformation is created by applying a small force F on the sheet. A micro-displacement sensor based on Hall effect is used to measure the deformation, where the output voltage is proportional to the amount of displacement.

Using this apparatus, the following experiments can be conducted:

1. Understand the principle, structure, properties and applications of a Hall displacement sensor

2. Measure the Young's modulus of a copper sample

3. Calibrate a Hall displacement sensor

4. Measure the Young's modulus of a malleable iron sample

Specifications
 Reading microscope range: 8 mm, resolution: 0.01 mm, magnification: 20 X Weights 10.0 g and 20.0 g Digital multimeter 3-1/2 digit, range: 0 ~ 2000 mV Samples Copper and malleable cast-iron sheets Relative Uncertainty of Measurement < 3%

Part List
 Description Qty Host Machine 1 Stand Rack 1 Reading Microscope 1 Hall Sensor 1 Connection Wire 1 Weights 8 pcs at 10 g, 2 pcs at 20 g Manual 1

Top >>