ITM Blog Posts

The Blog Post category contains blog posts associated with ITM’s testing services, LabVIEW programming, Test & Measurement Hardware, Boiler Monitoring Systems, and iTestSystem applications.

ITM Going to New Heights with Aerospace Clients


Rocket on Launch Pad

A commercial airliner touches down and brakes safely so hundreds of passengers can exit at their destination. A solid rocket booster separates from a space flight as the main payload overcomes gravity to head into orbit. A military drone completes its mission over enemy territory. 

In a very real way, the team of engineers at Integrated Test and Measurement (ITM) goes along for the ride during plenty of crucial moments in the aerospace realm. From doing data collection to measure the stress load of an airplane’s landing gear to installing strain gauges on rocket components to gather more than a thousand channels of data, ITM’s testing and measurement services are going to incredible heights.  

Ryan Welker, ITM vice president of operations, says their aerospace partners most often turn to the Milford, Ohio, engineering service and software company for their expertise in testing and design validation, particularly if the project involves complex strain gauge work. 

“A lot of times when you are dealing with aerospace requirements, it involves challenging materials. You aren’t just working with steel, and it’s quite a bit different installing strain gauges on titanium or carbon fiber. It makes the installation process a little more challenging, but we’ve been taking tough measurements in extreme environments around the globe for 20-plus years. Our experience in strain gauging is more of an art than a science.” 

Welker points out that ITM won’t hesitate to put boots on the ground for their aerospace partners who have complex challenges. That was the case when a high-end aerospace company rang him up in desperate need of structural testing on a crucial component ahead of a launch. Though the job would require several people on-site for multiple months, Welker and team made it work. They installed strain gauges around the clock for three months so their client could complete crucial validation testing on a design. ITM delivered, and the client made their deadline. 

Often during these intricate instrumentation processes, the ITM team employs the capabilities of their custom iTestSystem software to monitor stresses during complex assemblies. Aerospace companies may also rent ITM’s custom-built acquisition hardware to record data, even if it means that ITM needs to conduct onsite demonstration, support or help with analysis. 

“We don’t just offer the ability to run a test,” says Welker. “We train your folks to use it.” 

In the end, ITM offers innovative test solutions and a range of aerospace testing services designed to help the industry develop superior products and processes.  

Key Services for Aerospace Clients 

Strain Gauge Installation 

Installing strain gauges in the field for structural and fatigue measurements requires expertise and experience. Our field service technicians and engineers have installed strain gauges on structures and machinery around the globe for decades. Whether you use our iTestSystem software to stream and analyze strain signals for static measurements and real-world fatigue data acquisition, or contract our software engineers to build a real-time strain monitoring system, we will make sure you acquire quality strain data for your aerospace project. 

Structural and Mechanical Testing 

Our team of engineers have decades of experience in performing structural testing in  aerospace and many other markets. Testing services include Impact Testing and Modal Analysis, Structural Dynamics Operating Tests, Data Logging and Unattended Data Acquisition. 

Our engineers can assist you with any part of the testing process. This includes test planning, onsite sensor installation and data acquisition and remote test monitoring. 

High Channel Count Structural DAQ Systems 

In our work, we often collect strain, vibration, voltage, and other signals simultaneously that require well over a thousand total sensor channels. Network synchronization technology embedded within the NI cDAQ chassis allows users to account for the sheer number of channels during these structural tests. The true secret to our success in these high-channel jobs has been our iTestSystem software which leverages the cDAQ’s synchronization technology while providing an intuitive data acquisition and sensor configuration and setup. 

Rugged Data Acquisition Systems for Rent 

If the right tool doesn’t exist, build it. For years that has been the approach ITM engineers have taken when it comes to gathering data and building tests for clients. And after decades of performing structural testing in aerospace, off-highway, automotive, industrial and many other environments, we’ve built up an impressive line of custom Rugged Data Acquisition (RAC) Systems which will perform under harsh testing conditions.

For more information about our DAQ Rental Hardware, data collection or Testing Services, contact Ryan Welker via email at ryan.welker@itestsystem.com.

iTestSystem Application: MultiDAQ

iTestSystem MultiDAQ

MultiDAQ is a configurable general data logging and real-time data viewing application for iTestSystem (iTS).  An intuitive user interface allows test technicians and engineers to choose sensor channels, synchronize DAQ hardware,  change sample rates,  setup input data filters, configure data file triggering, and manage automated data file naming.  Once configured, MultiDAQ provides graphical, tabular, and digital real-time data views for test operators to visualize data trends during the data collection process.

Function List

  • Stream data from multiple C-series NI chassis.
  • Stream data at different sample rates.
  • View real-time data, including RMS and waveform data in tables, graphs, colormaps, spectra, and waterfall graphs.
  • Alarm when signals exceed channel’s minimum or maximum values.
  • Trigger acquisitions based on custom duration or value trigger statements.

For more information about MultiDAQ or iTestSystem, contact Chase Petzinger via email at chase.petzinger@itestsystem.com.

Industrial Monitoring Tools: cRIO-9046 Embedded Controller

CompactRIO cRIO-9046

One of the tools our embedded software engineers commonly use for industrial control and process monitoring applications is the NI CompactRIO (cRIO) controller. These controllers let our engineers deploy autonomous systems that use complex algorithms to generate process outputs or key performance indicators (KPIs) from structural, vibration, and process monitoring sensors.

For example, in one of the latest industrial boiler monitoring applications, we embedded a cRIO-9046 controller with our Sootblower Fouling Detection (SFD) algorithms which are used to compute and then output equipment health and process efficiency KPIs. Let’s take a look at the cRIO-9046 controller’s specifications, functionality and programming.

cRIO-9046 is an 8-Slot CompactRIO Controller that has an Intel Atom 1.30 GHz Dual-Core CPU, 2 GB DRAM, 4 GB Storage, a Kintex-7 70T FPGA that can operate from -40 °C to 70 °C. The eight slots are used for C-Series conditioned IO modules that connect sensor inputs and data/control outputs and buses.

Its operating system, NI Linux Real-Time (64-bit), allows real-time performance with the usability desktop operating systems. Our engineers use Xilinx Kintex-7 7K70T FPGA to implement high-speed, (MHz) low-latency hardware-level data processing and decision-making. The cRIO-9046 also has several connectivity ports, including 2x Gigabit Ethernet, USB 3.1, USB 2.0, RS232, and RS485 ports.

Embedded LabVIEW developers can use these ports and standard communication protocol toolkits to develop standard or custom machine/system interfaces.

For a cRIO-9046 or other CompactRIOs to operate, custom LabVIEW RT applications must be developed and then deployed to each controller. Depending on the complexity of your application, you may also need to develop and deploy LabVIEW FPGA code to the cRIO’s FPGA. Over the years, our embedded software engineers have developed a standard architecture as well as software tools for communication and analysis routines to simplify the custom LabVIEW RT application development. They also have experience developing embedded LabVIEW FPGA code for advanced hardware-level signal processing.

For more information about the cRIO-9046 and our LabVIEW development capabilities, contact Mark Yeager via email at mark.yeager@itestsystem.com

Related Links

iTestSystem Application: Archive Manager



 

iTestSystem's Archive Manager Application

Managing data from autonomous data acquisition systems that generate megabyte and gigabyte data files can be a challenge. iTestSystem’s Archive Manager application simplifies this data collection challenge by allowing users to configure a local directory as a data file FIFO and a separate directory (usually on a USB drive) as a data archive.

When enabled, Archive Manager solves two problems common to DAQ systems: system crashes due to a full hard drives and removeable drive (USB/network drive) management.  The Archive Manager allows users to set a limit on the amount of data stored in a specific directory. It monitors this directory and removes older files to accommodate new data files (data file FIFO).  This application keeps track of all data files removed from the watch directory and all files moved to the archive directory.  This allows users to swap removeable drives on the fly without duplicating data files in the archive or interacting with the DAQ system’s HMI.

Another feature of the Archive Manager application that ensures autonomous DAQ system stability is the configuration backup process.  When enabled, the configuration backup service periodically copies all files added in the log file list to the archive directory.  Backing up files like the iTestSystem configuration file allows test engineers to keep track of setup changes that occur during a test or data logging project and restore previous configurations.

For more information about the iTestSystem Archive Manager or iTestSystem, contact Chase Petzinger via email at chase.petzinger@itestsystem.com.

High Channel Count Synchronous Datalogging

Faced with the challenge of testing a large and complex on‐highway vehicle, engineers from Integrated Test & Measurement knew it would take hundreds of channels…

Sound & Vibration DAQ Tools: NI-9231 Module

NI-9231 CompactDAQ Module

When measuring noise and vibration levels, our engineers use the NI-9231 sound and vibration module, a CompactDAQ chassis and a Laptop running iTestSystem for data logging and analysis. The NI-9231 module is an updated, higher channel count version of the NI-9234 module.

The NI-9231 is an 8 channel, 51.2 kS/s/channel, -5 V to 5 V, C Series Input Module with IEPE excitation that can be turned on and off, and open/short circuit detection. To increase channel capacity, these modules use 10-32 plug for its sensor input connections. NI provides a PCB Low Noise Coaxial Cable, 10 ft w/10-32 plug to BNC plug to accommodate most standard accelerometer and microphone connections.

For more information about doing data collection with the NI-9231, iTestSystem or sound and vibration measurements, contact Ryan Welker via email: ryan.welker@itestsystem.com or phone: (844) 837-8797 x702

Railcar Structural Testing Case Study

Obvious signs of fatigue — cracks at the corners of doors — had begun to surface on an in-service Railcar. A railcar structural testing case study.

Engineering Data Acquisition Tools: NI-9236 Strain Module

NI-9236 Strain Gauge Module

The most common strain gauge installation configuration is a 350 ohm, quarter bridge.  Quarter bridge installations a generally the easiest and most economical installation for determining structural strain levels.  In the quarter bridge configuration a single element strain gauge is mounted in the principle axial or bending strain direction.

One tool that our engineers and technicians use to collect data from 350 ohm, quarter bridge strain gauge installations is the NI-9236 strain module.  The NI-9236 is an 8-Channel C Series 350 ohm strain/bridge input module that is used with a CompactDAQ or CompactRIO chassis.  This module provides bridge excitation (3.3 Volts), Wheatstone bridge completion, shunt calibration, and filtering for 350 ohm quarter bridges.  Use this module in conjunction with a CompactDAQ chassis and iTestSystem engineering measurement software to collect synchronized, high-speed (10kHz) structure strain data.

For more information about the NI-9236, DAQ module rental, strain gauge installations or our data logging solution iTestSystem, contact Ryan Welker via email: ryan.welker@itestsystem.com or phone: (844) 837-8797 x702

Engine Test Cell Vibration Monitoring

Check out this video of a Lego Test Cell Model that is controlled with an NI CompactRIO.  ITM implemented an embedded vibration health monitoring application at an engine manufacturing company in Texas.  The distributed system monitored and reported damaging engine dyno vibration levels on 10 engine test cells.

Paper Mill Thermocouple Monitoring

One solution for monitoring steam tube temperature/s located inside its utility boiler to make sure start-up conditions were met.