The GDS Magnum™
In the past, engineers who wanted to perform destructive testing had to cope with the limitations of standard rotor kits or design special test machines from scratch. There is now another option.
SpectraQuest has developed the Magnum™ series rotor dynamics test beds to withstand the harsh punishment inflicted by failure analysis research and prognostication studies. As with most of our products, modular construction is employed to permit low cost customization. Each machine is developed in close cooperation with the customer and may include one or more of the following components and options:
- Variable speed drive and motor
- External PC drive control
- Rotor deck for misalignment and balance studies
- Fatigue section to support studies of imminent shaft fractures
- Bearing section to support studies of catastrophic bearing failure
- Resonance section for potential failure at the first critical
- Open architecture Gearbox Dynamics Simulator™ for gear failure research
- A variety of loading systems
- External PC control for electric braking systems
The Magnum series is heavy-duty, easily configurable, and laboratory-based.
Drive:
Variable speed induction and DC drives are available to power the test rig from 10 to 50 horsepower. Motors are typically rated at 1800 and 3600 rpm. Higher speeds are possible.
External Drive Control:
In order to provide varying input speed according to a predetermined pattern for testing and to provide remote control for safety, the GDS Magnum™ can be controlled from an external PC with an optional interface communication box.
Rotor Deck:
The Rotor Deck is a beefed up version of the conventional module used for many years on the Machinery Fault Simulator™ and includes all of the proven features for introducing shaft misalignment, faulted bearings, and rotor issues.
Shaft Fatigue Section:
This device permits the intentional and controlled failure of shafting for endurance and signature studies.
Bearing Section:
This device permits the safe operation of bearings to catastrophic failure.
Resonance Section:
The Resonance Section is designed on the principles of the “Resonance Kit” available on the Machinery Fault Simulator™. However, it differs in that the device supports controlled failures.
Gearbox Dynamics Simulator™:
Spectra Quest has successfully manufactured this gearbox for many years to support diagnostics and dynamics studies. It can be configured as a double or single reduction, parallel shaft reducer or increaser. The top is easily removable for quick access to the internals. A clear top is available to permit observation of the gearing and lubrication action while in operation. The gears can be slid along the length of the shafts to alter the system response and to provide space for any additional devices. Both spur and helical gears can be installed. Proximity probes may be installed at pertinent locations to collect vibration data. With the Magnum™ series, the shaft and bearing sizes have been increased to withstand the tortuous environment. An optional forced oil lubrication system and cooler is available.
Loading Systems:
The loading system is at the discretion of the customer. Some typical systems employed so far include magnetic and electrical particle brakes, alternators with resistor banks, water-cooled mechanical brakes, pumps, and spring type reciprocating mechanisms.
External Brake Control:
In order to provide varying torsional load according to a predetermined pattern and to provide remote control for safety, the brake system can be controlled from a remote location. For electric magnetic particle brakes, a communication interface box can be furnished to permit control from an external PC.
Customer Applications:
Applications frequently include studies in the early detection of shaft cracking, imminent gear failure, and bearing failure.
| 
