Go to GlobalSpec.com Home
Alert   Product Alerts
Keep current on the latest products, new suppliers, and technical articles of interest to you. (See Topics)

A Method of Determining the Elastic Properties of Alloys in Selected Crystallographic Directions For X-Ray Diffraction Residual Stress Measurement

From Lambda Technologies
 

 

A technique and apparatus are described for obtaining
the elastic constant E/(1 + ?) in selected
crystallographic directions for the purpose of
calibrating x-ray diffraction residual stress
measurement methods. The preparation of a simple
rectangular beam specimen with two active electrical
resistance strain gages applied to the test surface is
described. Samples are clamped in a diffractometer
fixture designed to minimize displacement errors, and
loaded in four-point bending to several stress levels
below the proportional limit. A method is described
for calculating E/(1 + ?) and an estimate of the
experimental error.
Values of E/(1 + ?) obtained for several alloy-(hkl)
combinations are presented. The results indicate that
several alloys of current commercial interest exhibit
significant elastic anisotropy.

Products & Services
Material testing services test, analyze, and certify a wide range of materials for purity, chemical compatibility, and environmental impact. Search by Specification | Learn more about Material Testing Services
Specialty testing and inspection services provide specialized or proprietary testing services and inspection services. Learn more about Specialty Testing and Inspection Services
Product and component testing services is the evaluation of a finished product or component through performance in electrical, life, environmental exposure, dynamic, ergonomic or other specialized tests.  Also testing to standards such as UL 489, CE or MIL-STD 810. Search by Specification | Learn more about Product and Component Testing Services
Non-destructive testing (NDT) services use test methods to examine an object, material or system without impairing its future usefulness. Search by Specification | Learn more about Nondestructive Testing (NDT) Services
Inspection services examine products, parts, equipment, repairs, services, installations, and facilities to ensure quality, consistency, and condition, as well as conformance to required standards and/or procedures. Search by Specification | Learn more about Inspection Services
Product Announcements
Lambda Technologies - Residual Stress Analysis
Residual stresses are vital to the overall strength and life of critical components. Most processes involved in the manufacture of a component can cause residual stresses that will be either... (read more)
Lambda Technologies - Finite Element Analysis (FEA)
Lambda Technologies provides finite element analysis (FEA) services in support of residual stress design and characterization. (read more)
Lambda Technologies - Retained Austenite Measurement
Hardening of steels requires heating to an austenitic phase and quenching to room temperature to produce a hard martensitic phase. Due to incomplete transformation some austenite is retained at room... (read more)
Lambda Technologies - Crystallographic Texture & ODF Analysis
Lambda Technologies has extensive experience determining the crystallographic "texture," or preferred orientation, in a wide variety of materials and forms. Much of the instrumentation and virtually... (read more)
Integrity Testing Laboratory Inc. - UltraMARS Software
There is a Supporting Software (SS) that is an integral part of UCC Measurement Unit. The SS allows controlling the measurement process, storing the measured and other data and calculating and... (read more)
Lambda Technologies - Surface Integrity Studies
Surface Integrity describes the influence of surface property and condition upon material performance. It has long been known that the method of surface finishing and the complex combination of... (read more)
Integrity Testing Laboratory Inc. - Scanning Electron Microscopy (SEM)
ITL provides analytical and characterization services using its three scanning electron microscopes that are also equipped with energy dispersive X-ray microanalysis systems. (read more)
Anton Paar - XRK 900 Reactor Chamber from Anton Paar
XRK 900 is the only heating chamber for X-ray diffraction experiments on the market specifically designed for studies of solid state and solid state-gas reactions up to 900 °C and 10 bar. It is a... (read more)
MW Industries - Coiled Springs
MW Industries manufactures a full range of coil springs, including compression, extension, torsion, and double torsion configurations, both cold- and hot-wound. (read more)
LHV Power - X-Ray Power Supplies
LHV Power (FKA Hitek Power) X-ray power supplies, designed to meet many inspection and analytical applications, power range capability from the top of the range 2kW Series XR2000 down to low power 50W... (read more)
Topics of Interest
A brief overview of the theory and practice of x-ray diffraction residual stress measurement as applied to shot peened materials is presented. The unique ability of x-ray diffraction methods to... (Read More)
A method of determining the axial, circumferential and radial residual stress distributions in cylindrical specimens is described. The axial and circumferential residual stresses are measured directly... (Read More)
In x-ray diffraction residual stress measurement, the strain in the crystal lattice is measured, and the residual stress producing the strain is calculated, assuming a linear elastic distortion of the... (Read More)
A brief theoretical development of x-ray diffraction residual stress measurement is presented emphasizing practical engineering applications of the plane-stress model, which requires no external... (Read More)
Accurate knowledge of the subsurface residual stress and hardness distributions is required for failure analysis, fatigue life prediction and process control of induction hardened components. X-ray... (Read More)
See more product announcements for Material Testing Services
UL's New Thermoplastics Testing Center (TTC)

UL's New Thermoplastics Testing Center (TTC)
Underwriters Laboratories


Failure Analyses

Failure Analyses
ANALYZE Inc.


Research & Development

Research & Development
Akron Rubber Development Laboratory, Inc. (ARDL)


11 See more product announcements for Material Testing Services