Products

1227719
AP-8213B
Stress/Strain Apparatus (PASPORT)

Stress/Strain Apparatus (PASPORT)

AP-8213B   - 

Allows the student to measure both stress and strain during the entire process of stretching a material to the point of rupture.

Also Available:

600335
AP-8214A
Stress/Strain Apparatus (without sensors)
PS-2104,CI-6746,PS-2120A,CI-6538

Stress/Strain Apparatus (without sensors)

AP-8214A   - 

Allows students to stretch a material to the point of rupture. By adding sensors you can take quantitative measurements.

Overview

PASCO's compact Stress/Strain Apparatus shows the stress and strain during the entire process of stretching and breaking a material. The sample is stretched by turning the knob by hand until the sample breaks. The force used to stretch the sample is measured using a Force sensor. Calculate both the stress and the change in length of the sample using a both PASCO Interface and Software.

Three forms of the Stress/Strain Apparatus are available:

  • With PASPORT Sensors - ideal for use with SPARKvue software and a PASPORT Interface
  • With ScienceWorkshop Sensors - ideal for PASCO Capstone Software and an Universal Interface
  • Without Sensors

Enlarge Image
Display of the characteristic curves of four different test coupons.

PASPORT or ScienceWorkshop?

PASPORT sensors connect directly to all current PASCO interfaces.

ScienceWorkshop sensors connect directly to the 550 and 850 Universal Interfaces as well as legacy ScienceWorkshop interfaces.  They can connect to other PASCO interfaces with the use of an adapter. More info.

Time: 4/29/2016 8:32:24 PM

How It Works

At the heart of the Stress/Strain Apparatus is a high quality hand crank that allows the user to generate the force needed to stretch and ultimately break the provided test coupons of different materials.

In order to accurately measure the forces involved a force sensor is used.  However, it's limit is 50 N, a number easily surpassed by the forces needed to break some of the materials.  That's why the Stress/Strain Apparatus employs a metal bar with a 5:1 mechanical advantage, increasing the maximum force that the sensor can read to 250 N.

A drive belt connects the hand crank to a rotary motion sensor which translates the turn of the crank into the corresponding change in length of the sample.  Either PASPORT or Science Workshop sensors may be used with the Stress/Strain Apparatus.

Tension is applied to the sample by turning the knob by hand until the sample breaks. The force used to stretch the sample is measured using a Force Sensor connected to a PASCO Interface. A metal lever provides a five-to-one mechanical advantage, increasing the maximum force that the sensor can read to 250 N.

The stress is calculated using Capstone or SPARKvue software by taking the force over the cross-sectional area. No adjustment is made for any change in the cross-sectional area during stretching.

The change in length of the sample is measured using a Rotary Motion Sensor. The resolution is 0.007 mm. The strain is calculated by dividing the change in length by the original length.

The software automatically calculates stress by dividing the applied force by the cross-sectional area and the strain by dividing the change in length by the original length.  Data points are taken continuously creating a graph in real time.  A linear curve fit of the initial straight line provides Young's Modulus while integrating under the curve determines the material's toughness.

The Stress/Strain Apparatus is mounted on a rugged aluminum plate.

 

Specifications

Replacement Parts

656056
AP-8222
Stress Strain Apparatus Coupons - Plastic
AP-8213B,AP-8213B,AP-8216A,AP-8214A
1
656062
AP-8223
Stress Strain Apparatus Coupons - Metal
AP-8213B,AP-8213B,AP-8216A,AP-8214A
1
600383
AP-8217A
Replacement Test Coupons (Full Set)
AP-8214A,AP-8213B,AP-8216A
1
Product Name Part Number Price Qty. Select
Stress Strain Apparatus Coupons - Plastic   AP-8222 Get Quote
Stress Strain Apparatus Coupons - Metal   AP-8223 Get Quote
Replacement Test Coupons (Full Set)   AP-8217A Get Quote

Buying Guide

Stress/Strain Apparatus (without sensors)

(AP-8214A)
Required - One of the following
1506
PS-2104
PASPORT Force Sensor
AP-8214A
1
1468
CI-6746
Economy Force Sensor
AP-8214A
1
Product Name Part Number Price Qty. Select
PASPORT Force Sensor   PS-2104
Economy Force Sensor   CI-6746
Required - One of the following
1264350
PS-2120A
PASPORT Rotary Motion Sensor
1
1385
CI-6538
Rotary Motion Sensor
1
Product Name Part Number Price Qty. Select
PASPORT Rotary Motion Sensor   PS-2120A
Rotary Motion Sensor   CI-6538

Resources

Stress/Strain Apparatus (PASPORT) (AP-8213B)

Product Manuals

Stress/Strain Apparatus (without sensors) (AP-8214A)

Product Manuals