Providing the Maximum Flexibility for Your Residual Stress Measurements

ixrd brochure

download pdf

A proven performer in the field, laboratory, and shop floor, the iXRD is an advanced system that will optimize your portable residual stress and retained austenite measurements. With our modular field stand approach, powerful software, easy-to-operate controls, and uniquely designed goniometers, the iXRD is one of the most flexible and sophisticated instruments available in the world.

ixrd gantry
ixrd standard

iXRD Standard

The iXRD Standard offers all the modularity and flexibility you need for your residual stress and retained austenite measurements. To ensure full radiation protection, this system is available with portable barrier screens and convenient beacon lights. Whether you need to measure an oversized part or a structure in the field, the iXRD Standard can be configured to provide the optimal setup.


MGR40 ixrd configurationMG40 ixrd configurationMG40 ixrd configurationMG40 cobra ixrd configurationC-frame configuration




Our popular MG40 offers a good balance between size and versatility. With a 40-mm focal distance and our standard 30-mm x-ray tube, it can measure inside a 120-mm
diameter bore.



With its fully integrated phi rotation axis, the MGR40 allows for automated triaxial measurements in the field.



The smaller MG30 is ideal for measuring in tight locations. With a 30-mm focal distance and our miniature 16-mm x-ray tube, it is capable of measuring inside a 90-mm diameter bore.


compact mount


A compact mount is available for lightweight and simple field use.

cobra mount

Cobra Arm

Our signature Cobra Arm offers fast, flexible positioning of the goniometer in any direction in space. It can be raised vertically, rotated horizontally, or turned upside down.

C-frame mount


The easily removable C-Frame mount combines the convenience of triaxial measurements in the field with the accessibility of the MG40.


Field Stand 2


A basic, low-cost stand for added flexibility in the field. This is our basic field stand with a 100 mm automated z-axis for focusing, Cobra Arm for flexible positioning of the goniometer, magnetic feet, and adjustable foot pads.

Field stand 4


Our most popular stand for portable stress measurements. Our upgraded field mapping stand has automated 100 mm x-, y-, and z-axes for convenient goniometer positioning and residual stress mapping. It also features a Cobra Arm for flexible positioning of the goniometer, magnetic feet, and adjustable foot pads.

Specialty Stands

Pipeline stand


Floor Stand


Tripod Stand

tripod STAND

Phi Stand

phi table

iXRD Combo

iXRD Combo

Take advantage of the convenience and safety of an iXRD Combo enclosure. Transform your portable unit into a fully functional laboratory system in minutes. It can be purchased as a basic enclosure or upgraded with integrated sample-handling stages. It provides a safe and convenient working environment and is available in our standard size or customizable to your application.

iXRD Combo angled viewiXRD table
iXRD modular mapping

iXRD Modular Mapping

The iXRD Modular Mapping system has a phi rotation stage and a fully automated 300x200 mm travel XY stage. All mounted on a removable base, the mapping stage provides comprehensive residual stress mapping or can be detached for large part accessibility. Additionally, the 200 mm z-axis and MG40 goniometer can be removed together and mounted on magnetic feet for use in the field.

ixrd residual stress diffractometerixrd residual stress diffractometer
ixrd gantry with worker

iXRD Gantry

The iXRD Gantry system has a variety of configurations. The overhead manual XY gantry enables easy positioning of the MGR40 goniometer over the steel table, or it can be positioned outside the front of the enclosure for oversized parts. The 100 mm travel automated XYZ stage provides local mapping and positioning or can be removed along with the goniometer and mounted on a tripod stand for field use.

close up of ixrd gantryixrd gantry measuring
iXRD miniature measuring

Specialty Miniature iXRD Goniometers

For your specialty application requiring small bore access, we have developed a unique line of miniature goniometers. By combining a smaller version of our PSSD detector and a 16 mm x-ray tube, we have developed a product that eliminates the need to section or cut parts. At Proto, we have pushed the boundaries of conventional stress measurement by creating the world’s smallest residual stress measurement instruments.



With a 15 mm focal distance, a 16 mm x-ray tube, and miniature PSSD x-ray detectors, the MG15 is capable of measuring hoop stress inside a 60 mm diameter bore.

mg15 axial


With a 15 mm focal distance, a 16 mm x-ray tube, and miniature PSSD x-ray detectors, the MG15 Axial can measure axial stress inside a 125 mm diameter bore.

ixrd control box


Proto’s iXRD models feature a compact and portable 300W self-contained control unit. With integrated high-voltage supply, x-ray tube cooling, motor control, system electronics, and a display panel for kV, mA, and interlocks, this system provides everything you need to run measurements safely and reliably. Additional safety features include external ports for interfacing to an enclosure or barrier and beacon lights indicating when the shutter and x-ray are on.

EASY and CONVENIENT residual stress measurements

All of our iXRDs are easy and convenient to use. A high-performance goniometer maintains ASTM E915 accuracy in a low-maintenance design. The manual focus pointer enables accurate positioning of the goniometer in complex geometries. The automated focus pointer provides convenient focusing of large residual stress maps. A wide variety of x-ray beam apertures are available, including round 0.5, 1.0, 2.0, 3.0, 4.0 mm options and rectangular 0.5x3, 1x3, 0.5x5, 1x5, and 2x5 mm options. High stress standards, zero stress powders, and RA standards ensure accurate results. Rapid positioning of the goniometer is accomplished with easy-turn locking handles.

goniometer bearing

High-performance goniometer Bearing

manual focusing

Manual focusing

Automated focusing

Automated focusing

aperture kit

X-ray beam
aperture kit

Reference Standards

Reference standards

Easy turn locking handles

Easy-turn locking handles


Portable residual stress mapping (patented) is available on all iXRD models, providing a comprehensive picture of the residual stress state of your part. As the originators of residual stress mapping, Proto is a leader in the field. Automated retained austenite (as per ASTM E915) enables characterization of % RA in steels as low as 2%. X-ray elastic constant (XEC) determination ensures automated residual stress measurement material calibration as per ASTM E1426. X-ray tube cartridges allow for fast x-ray tube changes while maintaining accurate system alignment.

Residual Stress Mapping

Residual stress mapping (patented)

retained austenite

Automated retained austenite measurement

X-ray Tube Cartridges

X-ray tube cartridges


XEC determination via
4-point bend