For more than 30 years, we’ve been helping companies and institutions solve their material testing issues. Here, you’ll find a collection of case studies that illustrate how ADMET can help your organization.

Niacc-Avitech Technologies Drives Growth with ADMET Investment

Challenge

Niacc-Avitech Technologies is an aircraft component overhaul and manufacturing facility in Fresno, CA. The company repairs and overhauls starters, generators, fuel assemblies, cable harnesses, electronics, brake and hydraulic components, and other aircraft appliances and components. The company also has a build-to-print division that supplies major customers with electrical rotors, starters, and wire harnesses. Niacc recently received a customer request to add overhaul and servicing capabilities for landing gear shock absorbers to its portfolio of services. The technical specifications meant that Niacc would need new test equipment. It was difficult for Rayan Kabeer, Niacc’s head of engineering and product development, to find a test machine that would apply the right amount of load, some 49,000 pounds. The offerings from other companies were either too big or too small. They could have custom built a machine, but the time and money associated with that were too great.

Solution

After a rigorous diagnostic assessment of Niacc’s needs, ADMET’s Account Director recommended ADMET’s ExPress/eXpert 1600 Universal Testing Machine equipped with the MTESTQuattro materials testing system. Specifically, the configuration that worked best was the ExPress 300 kN (60,000 lbf) dual-column servo-hydraulic materials testing machine equipped with the MTESTQuattro materials testing system. This is a Microsoft Windows-based software product that controls tests, collects and reports data, and offers sophisticated tabular and graphical representations of test results for analysis and comparison. The machine arrived within six weeks of the initial conversation.

Results

Mr. Kabeer is especially pleased with the MTESTQuattro materials testing system. “The best thing about ADMET is that, with their software, we can control the test pretty much hands-off,” he said. MTESTQuattro also graphically plots the test results and highlights any test parameters that are out of tolerance, making it easy to spot failures. The results are saved in a database that, by regulation, is kept for two years after the part has been shipped. Thanks to the investment in ADMET technology, Niacc was able to respond to its customer’s request for a new line of testing and is now providing the service to other customers that operate the same aircraft. Additionally, there are other similar aircraft that use the same type of shock absorber. The ExPress machine Niacc purchased from ADMET can be used to test these and other larger shock absorber assemblies, further extending the market and driving new business.

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ADMET Delivers an Innovative Solution to Leading Corporate Jet Manufacturer

Challenge

A leading U.S. based manufacturer of private and corporate jets was called upon to expand maintenance capabilities to include the testing of shock strut assemblies, shock absorbers, and actuators for aircraft landing gear. Both main and nose gear were to be accommodated by a single system. To reach the largest potential market of business aircraft owners, a flexible, high capacity testing system was needed. Also, because each aircraft maker has their own maintenance testing requirements and they all differ in significant aspects, an adaptable testing system was required. This new capability required precision transducers, complex control, and the ability to adapt for different sizes and types of test assemblies. Critical to the test program was the ability to measure the rotational steering position of the loaded landing gear.

Solution

The prospect submitted their specifications to a select set of uniquely qualified suppliers for comments. One test required applying a compressive uniaxial load, then twisting the steering knuckle and measuring torque and angle of rotation. ADMET analyzed the engineering data and responded to the opportunity with a unique solution. The solution was based on an inverted version of their rugged eXpert 1600 series servo hydraulic universal testing system and a rotating compression platen instrumented to measure angle. The jet manufacturers’ customers demanded timely service so keeping test system downtime to a minimum was important. Thus, a testing system constructed with multiple domestic part sources was also a requirement. ADMET’s eXpert 1600 series testers, made in the USA using off the shelf American made parts, satisfied this requirement. In the client’s words “Once we reviewed each of the suppliers, we decided the only choice was ADMET.” Two months later, the system was operational and training completed.

Results

The eXpert 1600 series servo hydraulic universal testing system equipped with ADMET’s MTESTQuattro Materials Testing System has performed beyond expectations and without a single instance of service. The customer found the test system incredibly easy to use, and configurable to perform a variety of tests. When the customer is called upon to create a new method of testing, MTESTQuattro allows them to implement it in minutes. Since ADMET software allows installation on multiple computers, the client designs new testing procedures at their desks and downloads them to the testing system in the hangar. This saves a considerable amount of time and reduces errors. When loading and unloading the landing gear assemblies, they use a fork lift or winch so “bumping” into the testing machine is a common occurrence. Subsequent calibration verifications, done every three months, confirm that the force, torque and alignment have exhibited no ill effects. As stated in a recent follow up call with the client: “We have performed hundreds of tests, many consisting of thousands of cycles each, and the hundreds of hours of faultless operation have served to confirm our decision to purchase from ADMET, Inc. We consider ourselves fortunate to be an ADMET customer and their application and technical support continues to be responsive, friendly and professional.”

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ADMET Transforms Automotive Supplier Dexter Axle’s Rubber Component Testing

Challenge

With its nine manufacturing centers and international distribution network, Dexter Axle is a leading supplier of running gear and components for the trailer industry. The company has invested heavily in manufacturing and testing technology, with in-house laboratories conducting rigorous metallurgical, stress, and fatigue testing. The company performs routine tests of daily in-process manufacturing friction welds on axle assemblies using a Reihle electromechanical tensile testing machine. However, Dexter Axle’s main line of heavy duty axles, Torflex, uses rubber components that are integral to the product’s performance. Management decided that the rubber cord should be tested upon receipt at the facility. As a result, James Bryan, a Dexter Axle quality technician, was asked to a conduct a modulus test on one or two rubber core samples from each case. “At the beginning I was using our manual system. It was very difficult to accurately control the different speeds. Our results were all over the map and I had no confidence in the results,” commented Bryan. He contacted ADMET to see if there was a way to improve reliability of their results.

Solution

The answer was ADMET’s MTESTQuattro test system. By adding MTESTQuattro and replacing the motor amplifier, ADMET was able to upgrade the Reihle frame to handle the necessary modulus tests. Now, using MTESTQuattro both to control the testing process and record the results for the bend and modulus tests, Bryan and quality control inspectors were able to conduct up to 100 tests per week.

Results

This improved confidence in their results has had a positive impact on Dexter’s business. “Now we get results that we can rely on and we can easily transfer them to our Statistical Quality Control system or to a spreadsheet,” said Mr. Bryan. The system came with some unanticipated side benefits. It frees up Bryan’s time allowing him to easily train QC technicians to oversee the modulus testing. In addition, MTESTQuattro manages the entire testing cycle. Explained Mr. Bryan, “Previously, I was completely tied to the machine during the test. Now, I can log information from earlier tests or do something else. It even shuts itself down at the end of the cycle.”

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ADMET Equipment Allows Nerites Corporation to Test the Mechanical Properties of Synthetic Molecules

Challenge

Nerites Corporation was founded in 2004 to develop novel adhesives and coatings for a wide range of medical, industrial, and consumer applications. Its innovative approach creates synthetic adhesives and coatings that mimic the adhesive proteins of the common blue mussel (Mytilus edulis). The majority of Nerites’ work focuses on structural adhesives and coatings for biomedical applications. Nerites’ researches believe they can overcome the biomedical concerns associated with animal-derived and human-derived tissue adhesives and sealants by utilizing synthetic molecules. While these molecules answer concerns related to toxicology and viral transmission, they must still be tested for their strength and durability and all relevant mechanical properties. One of Nerites’ senior scientists, Jeffrey Dalsin, Ph.D., contacted ADMET seeking a solution.

Solution

Dr. Dalsin knew that Nerites needed a small, horizontally-configured tabletop machine that could test materials in a temperature controlled saline bath. ADMET’s Account Director and engineers recommended their eXpert 5602 table top testing machine equipped with an eP2 Digital Controller. After examining other options, Dr. Dalsin decided that ADMET was the best choice. The delivery took about six weeks and the setup was virtually automatic.

Results

From the beginning, ADMET worked with Dr. Dalsin to arrive at a solution tailored to his needs. He says, “I contacted ADMET and explained our needs and the force ranges in which we would be working and the fact that we wanted to have a certain amount of computerized control. I also explained that we wanted to test underwater. ADMET came through with a really good design and a very competitive price.” The in-house ADMET machine makes it easier to test different formulations quickly. Dr. Dalsin explains, “The pressure generated in the brain and spinal cord is much different than the pressure generated in, say, a blood vessel, especially the arterial system. So, we’re developing different formulations for applications where different forces are involved.” Dr. Dalsin also has plans for further testing with the ADMET machine in the future. Having studied peak stresses, he is now interested in researching stress/strain relationships.

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ADMET Testing Machine Satisfies Compression Bend Test Needs of Endoscope Tubing Provider Karl Storz

Challenge

Karl Storz is an international company known for its production of medical instruments and devices. Its product range varies from neuro-endoscopy and cardiovascular surgery to veterinary medicine, gynecology and spine surgery. In particular, Karl Storz has developed meter-long endoscope tubing, which are instruments useful for studying the inside of the human body. With this technology, surgeons can more clearly see into the organs they are performing surgery on and therefore obtain better results. In order to develop such products for the medical sector, it is a necessity to ensure the strength, safety, quality, and structural properties of endoscope tubing. The ultimate challenge that Karl Storz encountered is the ability to track endoscope flexibility and have better control of their analysis. The company was looking for an easy to use machine capable of measuring deflection rates and conducting compression bend testing on their meter-long endoscope tubing.

Solution

Karl Storz considered building their own compression bend testing machine. However, the cost and time benefits provided at ADMET were viewed as a worthier solution. It would be a longer process to develop a machine on-site and complete, standardized systems from ADMET provided a better opportunity. The eXpert 5601 1kN single column universal testing machine equipped with the eP2 Digital Controller and GaugeSafe Live Data Exchange Program was purchased along with a custom bend fixture. ADMET also provided the company with on-site installation and training. After receiving the machine, no major issues were encountered and on-site training was helpful for learning quickly how to use the system.

Results

After acquiring and using the eXpert 5601 1kN testing machine, a visible improvement in Karl Storz’s materials testing occurred. The company was able to gain more control and information over the quality of their product. This improved their line and ability to assess structural and mechanical properties of their endoscopes. Ultimately, it results in fewer defects for their customers down the line. Joseph Labenski, a manufacturing engineer for Karl Storz Endovision, stated that his team was “very happy with the system. The ADMET eXpert 5601 testing machine is a great product from a self-established company. The testing system performed as expected and met all of our expectations. It was delivered on time and did not require months of training.”

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ADMET Helps FTL Shorten Test Times & Improve Accuracy

Challenge

Flood Testing Labs, Inc. (FTL) is one of North America’s preeminent concrete, asphalt, soils, steel, and weld test laboratories. Based in Chicago, FTL services building and roadway construction with both onsite technical services and certified laboratory testing to provide technical certifications for materials. Its largest service is concrete cylinder compression testing. For this, FTL depends on two testing machines. One of these, a Tinius Olsen 400,000 lb. Universal Testing Machine, was beginning to show the wear and tear associated with long term use in a corrosive atmosphere. The wiring and electrical components were becoming troublesome to maintain. Walt Flood, engineer-in-charge at FTL, knew it was time for an upgrade. He turned to his calibrator, Cal-Rite Corporation, who suggested he consider ADMET.

Solution

Mr. Flood and Cal-Rite wanted a solution that would improve efficiency and test accuracy. They decided to install one of ADMET’s digital machine controllers in their Tinius Olsen frame, and moved an ADMET DL 16 Load and Stress indicator from that machine to another. The end result was a double refit. ADMET and Cal-Rite worked closely together to ensure the best possible outcome for FTL. Cal-Rite handled the installation and training while ADMET provided backup technical support. The entire installation, including replacing the necessary equipment, required less than a day.

Results

The results have been very positive for FTL. The electronics in their testing machines are new and reliable. Test times have been reduced from 45 minutes to 13 minutes. All of the Young’s Modulus calculations are completed during the test. ADMET’s digital controller allows FTL to capture data, import into a spreadsheet, and create backups. Mr. Flood notes that the retrofitted machine was recognized by one of his technicians as the most accurate machine he’d ever seen. Mr. Flood concludes, “I’m very pleased with the whole ADMET/Cal-Rite setup.”

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