background image

Materials Testing Machine

Introduction

2

012-13762C

Materials Testing Machine (ME-8236)

.

*See the PASCO catalog or web site at 
WWW.PASCO.COM

Materials Testing System (ME-8230)

.

Accessories and Other Items

.

.

*AP-8217A Replacement Test Coupons (Full Set) con-
sists of the AP-8222 Plastic Coupons and the AP-8223 
Metal Coupons.

Introduction

The PASCO Materials Testing Machine is a device for mea-
suring force and displacement for various materials as the 
materials are stretched, compressed, sheared, or bent. The 
Materials Testing Machine has a built-in load cell (strain 
gauge transducer) capable of measuring up to 7100 newtons 
(N) of force (1600 pounds), and an optical encoder module 
that measures displacement of the load bar. A crank-and-gear 
system raises or lowers the load bar on two leadscrews (also 
known as 

power

 screws or 

translation

 screws). Force data 

from the load cell and displacement data from the encoder 
module can be recorded, displayed, and analyzed by a 
PASCO Interface with PASCO Data Acquisition Software. 
The sensor cable from the Materials Testing Machine con-
nects to a PASPORT input port. (See the PASCO catalog or 
web site at www.pasco.com for more information about 
PASCO interfaces and data acquisition software.)

Included Equipment

The Materials Testing Machine includes a calibration rod 
and nut, a load bar round nut, and a pair of safety shields 
with Velcro® hook material.

Calibration Rod and Nut, Load Bar Round Nut, 
Safety Shields

The calibration rod and nut can be used to determine 
how much the Machine itself flexes as force is applied, 
either in tension or in compression. 

The load bar round nut is used to connect one end of a 
tensile sample to the load bar, for example, or can be 
used to attach an accessory or adapter to the load bar. 

The safety shields attach to the Velcro® loop material 
on the front and back of the load bar.

Materials Testing System

The 

Materials Testing System

 (ME-8230) consists of the 

Materials Testing Machine, plus a PASPORT interface called 
the USB Link, PASCO Capstone Software, and sixty tensile 
samples. 

The USB Link connects the sensor cable of the Materials 
Testing Machine to a USB port on a computer. The PASCO 
Capstone software records, displays, and analyzes the data 
from the Materials Testing Machine. The software is avail-
able as an automatic digital download from PASCO. 

Included Items

Included Items

Materials Testing Machine

Calibration Rod and Nut

Load Bar Round Nut

Safety Shield (2)

Required Items*

PASCO Interface (PASPORT compatible)

PASCO Capstone Data Acquisition Software

Model

Materials Testing System Items

ME-8236

Materials Testing Machine

PS-2100A

USB Link

UI-5401

PASCO Capstone Software

ME-8231

Tensile Sample, Aluminum (10)

ME-8232

Tensile Sample, Brass (10)

ME-8233

Tensile Sample, Annealed Steel (10)

ME-8234

Tensile Sample, Acrylic (10)

ME-8235

Tensile Sample, Polyethylene (10)

ME-8243

Tensile Sample, Steel (10)

Model

Accessories

ME-8237

Materials Bending Accessory

ME-8238

Materials Coupon Adapter

ME-8239

Materials Shear Accessory 

ME-8241

Materials Photoelasticity Accessory

ME-8242

Materials Structures Beam Adapter

ME-7011

Photoelastic I-Beams (24 each size)

Model

Other Items

ME-8240

Materials Shear Samples (3 ea. of 3)

AP-8222*

Coupons, Plastic (10 each of 4 types)

AP-8223*

Coupons, Metal (10 each of 5 types)

Recommended Items

Structures Cast Beam Set (ME-7009)

Truss Set Members (ME-6993)

Summary of Contents for ME-8230

Page 1: ...ad Tensile Samples 60 Sensor Cable Load Bar Round Nut Velcro Loop Material Safety Shield 2 Velcro Hook Material WARNING Provide proper eye protection when using the Materials Testing Machine or its Accessories Operate the Materials Testing Machine behind protective Safety Shields Crankshaft Base USB Link Items from the ME 8230 Materials Testing System Materials Testing Machine ...

Page 2: ... or in compression The load bar round nut is used to connect one end of a tensile sample to the load bar for example or can be used to attach an accessory or adapter to the load bar The safety shields attach to the Velcro loop material on the front and back of the load bar Materials Testing System The Materials Testing System ME 8230 consists of the Materials Testing Machine plus a PASPORT interfa...

Page 3: ...ounting the Materials Testing Machine firmly to a sturdy support calibrating the Machine mounting the item to be tested onto the Materials Testing Machine connecting the Materials Testing Machine to an interface for data recording and then turning the crank to apply tension stretching compression squeezing bend ing or shearing cutting forces to the test item Secure the Materials Testing Machine Th...

Page 4: ... will block any fragments that may come from the calibration rod in case it accidentally breaks Prepare to Record Calibration Data Connect the plug on the sensor cable into a PASPORT inter face such as the USB Link Connect the interface to a USB port on a computer Start the PASCO Capstone software Prepare to use the soft ware to calibrate the Material Testing Machine Optional Change Sign Note that...

Page 5: ...e described in the appendix Step Three Click Next to show the illustration in Step Three Install the calibration rod In addition to the illustration a Graph display of Position m versus Force N opens A Digits display of Force N is part of the Graph display Step Four Click Next to open Step Four Record a smooth data run Figure Step One Calibration window NOTE Detailed information about the calibrat...

Page 6: ...nomial Fit NOTE By default the Show Curve Fit Editor window is open in the Polynomial Fit window If the message Curve fit was successful is shown click Next to open Step Six Name the calibration NOTE If the curve fit was not successful use trial and change in the Curve Fit Editor to adjust the coef ficients until the curve fit is successful Click Update Fit to determine if the new coefficients mad...

Page 7: ...ck of the Load Bar Adjust the position of the shields so that they will block any fragments that may come from the sample Record Data Prepare PASCO Capstone software to record data If there is a stored calibration file that is to be used select it in the Calibration window Start data recording in the software Turn the crank in a clockwise direction to apply a tension force to the tensile sample Ob...

Page 8: ...nto the load cell Put the threaded section of the other clamp up through the hole in the load bar and use the sample nut to hold the upper clamp NOTE Do not completely tighten the sample nut yet Carefully place one end of a coupon between the jaws of the bottom clamp While holding the moveable jaw to keep it aligned with the fixed jaw use the tee handle and socket to tighten the hex nut CAUTION Ea...

Page 9: ...sample Use a sample that is long enough so that it extends about 1 4 6 mm beyond the front and back pieces Doing this makes it easier to remove the sample remnants from the accessory after the test Adjust the position of the load bar so that it rests on the top surface of the front piece Attach the Safety Shields Attach the Velcro hook material on the two safety shields to the Velcro loop material...

Page 10: ... Use the included hex key to remove the screws that hold the two parts of the clamp together Put the ends of a structures beam such as a 3 I Beam into one part of each clamp and then use the screws to reattach the other part of each clamp Screw the clamp with the short threaded end into the top of the load cell and put the other clamp through the hole in the load bar Use the sample nut to secure t...

Page 11: ... their laborato ries and classrooms and are not sold for profit Reproduction under any other circumstances without the written consent of PASCO sci entific is prohibited Trademarks PASCO PASCO Capstone PASPORT SPARK Science Learning System SPARK SLS and SPARKvue are trademarks or registered trademarks of PASCO sci entific in the United States and or in other countries For more infor mation visit w...

Page 12: ...he Machine Mounting the Calibration Rod To mount the calibration rod for tension screw the short threaded end of the rod into the top of the load cell Lower the load bar until the threaded part at the top of the calibration rod goes through the hole in the load bar Screw the load bar round nut onto the top of the calibration rod To mount the calibration rod for compression screw the short threaded...

Page 13: ...he icon for the Materials Testing System is linked to the icon for the interface Step One In the software select the Calibration icon in the Tools palette to open Calibration window There are two choices for the type of measurement that can be calibrated The default choice is Materials Testing System Compliance Calibration Use this choice in most cases The other choice is Materials Testing System ...

Page 14: ...ect an existing calibration Menu list of existing calibrations Import Calibration From Sensor Use this to import a calibra tion that has been stored in the sensor Menu list of calibrations shored in the sensor Use Raw Values Display voltages for force and position Manage Existing Calibration Delete Calibration Rename Calibration or Save Calibration in Sensor NOTE Up to four calibrations can be sto...

Page 15: ...ll the calibration rod In addition to the illustration a Graph display of Position m versus Force N opens A Digits display of Force N is overlaid on the Graph display Figure Step Three Install the calibration Figure Calibration Graph and Digits Displays Position m Force N Digits display of Force N Tool bar ...

Page 16: ...the crank counter clockwise and watch the Digits display Reduce the force to between 10 N and 20 N try not to let the force go to zero 6 Start turning the crank clockwise again to increase the force on the calibration rod as before If the second plot tracks on top of the first plot slowly turn the crank counter clockwise until the force on the Digits display is between 10 and 20 N Then carefully i...

Page 17: ... to increase the number of terms in the polyno mial Click 1 to decrease the number of terms in the polynomial Current Value This column shows the values calculated automatically by the curve fit algorithm The A value is the coefficient for the zeroth order term the B value is the coefficient for the First order term and so on MSE This is an abbreviation for Mean Squared Error It is one way to quan...

Page 18: ...ration window click the Calibra tion icon in the Tools palette From the File menu save the Capstone file for future use More Help See the Online Help System for the PASCO Capstone software Contact PASCO Technical Support Figure Use Calibration Figure Save Experiment As ...

Reviews: