Central Laboratory for Materials Mechanical Properties (CLaMMP)

Central Laboratory for Materials Mechanical Properties (CLaMMP)

Facility Description

The Central Laboratory for Materials Mechanical Properties (CLaMMP) contains testing machines and accessories for conducting educational, research, and outreach experiments on most solid materials. The lab is available for use for both the Northwestern community and non-Northwestern researchers on an hourly-fee basis. The laboratory is directed by Prof. Katherine Faber and Prof. David Dunand and is managed by Mark Seniw.

Testing Capabilities

Type of Test	Sample Geometry	Specimen Measurements	Test Parameters	Test Results	Properties
Tension	flat, round	Flat: thickness, width, gage length Round: diameter, gage length	Crosshead Speed, Load rate, Stress rate or Strain rate Temperature Atmosphere	Load Displacement	Young's Modulus of Elasticity Tensile yield strength Ultimate Tensile Stress (UTS) Strength Ductility Break load
Compression	round, square	Round: diameter, height Square: thickness, width, height	Crosshead Speed, Load rate, Stress rate or Strain rate Temperature Atmosphere	Load Displacement	Young's Modulus of Elasticity Compressive yield strength Ultimate Compressive Stress (UCS) Strength Ductility Break load
Fatigue	flat, round	Flat: thickness, width, gage length Round: diameter, gage length	Frequency (Hz) Stress ratio (R-ratio) cycles Stress amplitude or strain amplitude Temperature Atmosphere	Cycles to failure (fatigue life) Hysteresis loop Fatigue-crack initiation Fatigue-crack propagation	S-N curve (several tests) threshold of fatigue limit (several tests)
Creep	flat, round	Round: diameter, gage length	Load Temperature Atmosphere	Displacement Time to failure	Creep strength Ductility
Fracture toughness	compact specimen, double-beam specimen, single edge-notched	thickness, width, crack length, notch depth	Pre-crack load Crosshead Speed Temperature Atmosphere	Peak load	KIc JIc Fracture Toughness
Charpy	single edge-notched	thickness, width, notch depth	Temperature	Impact energy	Ductile to Brittle Fracture Transition Temperature
Izod	single edge-notched	thickness, width, notch depth	Temperature	Impact energy	Ductile to Brittle Fracture Transition Temperature
Bending Strength	flat	Flat: thickness, width, depth	3-point bend, span 4-point bend, upper and lower span Temperature	Load Displacement Peak load	Bending Stress Elastic Limit Modulus of Elasticity in Bending

Hardness testing equipment is available for use in the Metallography Facility (Cook Hall 2008) ASTM E 18, ASTM E 92, ASTM E 140, ASTM E 384

Equipment

Manufacturer	Model	Capacity	Temperature Range	Atmosphere	Tension Compression Fatigue	Special Features
MTS	810	50,000 N 11,000 lbf	-90C - 1600C	Air, Liquid	T, C, F	Microscopic observation
MTS	808	100,000 N 22,000 lbf	-90C - 1600C	Air, Liquid	T, C	Very slow speeds Quiet motor Acoustic measurements Stiffer frame
MTS	810	100,000 N 22,000 lbf	R.T. - 1100C	Air, Vacuum, Gas	T, C, F
MTS	810	250,000 N 55,000 lbf	Room Temperature	Air	T, C, F	Hydraulic grips
Sintech	20G	100,000 N 22,000 lbf	-90C - 1600C	Air, Liquid	T, C	150 gram capacity load cell
Tinius Olson	1177	358 J 264 ft-lbs	-196C - 200C	Air	Charpy
Tinius Olson	IT 504	25 J 18.44 ft-lbs	Room Temperature	Air	Charpy, Izod	Digital Impact Display
Interactive Instruments		4400 N 1000 lbf	Room Temperature	Air	T, C	Portable testing system
ATS	2330	50,000 N 12,000 lbs	Room Temperature	Vacuum	T	Dual Lever Arm Ratio 3:1 and 20:1
ATS	2320	22,000 N 5000 lbs	R.T. - 1000°C	Air	T	Lever Arm Ratio 5:1
ATS	2320	22,000 N 5000 lbs	R.T. - 1000°C	Air	T	Lever Arm Ratio 5:1

Usage Rates

Equipment and Services	Internal Rates (NU)	External Rates (Non-NU)
Testing Systems	$24/hour $84/day max	$60/hour
Portable Testing System	$40/day	$60/hour
Charpy	$2/test	$7/test
Labor	$85/hour	$170/hour
Expenables	At cost	At cost

External testing that can involve an undergraduate engineering student on the project will be charged the internal rates.

Publications which result from research which made use of MRSEC Central Facilities must include the following acknowledgment:

This work made use of Central Facilities supported by the MRSEC program of the National Science Foundation (DMR-0520513) at the Materials Research Center of Northwestern University.

Central Laboratory for Materials Mechanical Properties (CLaMMP)
Department of Materials Science & Engineering
Cook Hall, 2220 Campus Drive
Northwestern University, Evanston, IL. 60208-3108 USA
847-491-7780