What it is
- Sine force: 9,442 lbf (42.00 kN) to 13,000 lbf (57.83 kN) peak (V8-440 with SPA40K to SPA56K)
- Random force: up to 14,837 lbf (66.00 kN) rms (V8-440 with SPA56K)
- Half-sine shock force: up to 26,660 lbf (118.59 kN) (V8-640 with SPA56K)
- Acceleration: up to 140.0 gn sine peak and 100.0 gn random rms (V8-440)
- Velocity: 70.9 in/s (1.8 m/s) sine peak
- Displacement: 2.5 in (63.5 mm) peak-to-peak
- Usable frequency range: DC to 2,500 Hz (V8-440); DC to 2,300 Hz (V8-640)
- Internal load support: 1,540 lb (700 kg)
- Recommended amplifier: LDS SPA40K, SPA48K, or SPA56K
Swept and dwell sine testing to 13,000 lbf (57.83 kN) peak and 140 gn with the V8-440 and SPA56K.
High-force PSD profiles to 14,837 lbf (66.00 kN) rms and 100 gn rms with the V8-440 and SPA56K.
Two-millisecond half-sine pulses to 26,660 lbf (118.59 kN) with the V8-640 and SPA56K, including Shock Response Spectrum work.
What it is used for
- High-force random vibration testing: random profiles up to 14,837 lbf (66.00 kN) rms with the V8-440 and SPA56K.
- High-acceleration sine testing: swept and dwell testing at up to 140 gn with the V8-440.
- Mechanical shock testing: 2 ms half-sine pulses up to 26,660 lbf (118.59 kN).
- Heavy payloads: test articles supported by the 1,540 lb (700 kg) internal load support.
- Large fixtures: mounting large fixtures on the 25.20 in (640 mm) armature of the V8-640.
- Horizontal and under-chamber testing: using a combo slip table with guided head expander, the body rotation gearbox, or under-chamber operation.
Key features
- Two armature sizes: V8-440 for high acceleration, V8-640 for larger fixtures.
- Three amplifier sizes: SPA40K, SPA48K, or SPA56K.
- 2.5 in (63.5 mm) displacement: peak-to-peak stroke with 70.9 in/s (1.8 m/s) velocity.
- High guidance stiffness: cross-axial stiffness of 158,000 lbf/in (27.6 kN/mm) on the V8-440 and 166,000 lbf/in (29.0 kN/mm) on the V8-640. Rotational stiffness is up to 397,000 lbf·ft/rad (538 kN·m/rad).
- Internal load support: carries 1,540 lb (700 kg), controlled from the pneumatics pedestal box.
- Two mounting choices: base-mounted, or Lin-E-Air air-isolated trunnions with a body suspension resonance below 5 Hz.
- Low stray field: under 10 gauss (1.0 mT) trunnion-mounted and under 16 gauss (1.6 mT) base-mounted, at 6 in (150 mm) above the table.
- Options: combo slip table, V-groove castors, air glide, chamber floor support, cooling fan silencer, thermal management, and head expander.
Why engineers pick it
The V8 system
- LDS SPA-K switching amplifier: SPA40K, SPA48K, or SPA56K; 100 V rms rated output, 80 A rms per 8 kVA increment.
- Pneumatics pedestal box: emergency stop, Lin-E-Air suspension air control valve, armature position indicator, and test load control valve.
- Shaker cooling fan: 50 Hz or 60 Hz, with an optional silencer.
Site requirements
- Power: 3-phase, 380 to 500 V, 50/60 Hz as standard. A low-voltage option covers 200 to 220 V, 50/60 Hz. Maximum steady-state input is 72.3 kVA (SPA40K), 79.6 kVA (SPA48K), or 80.5 kVA (SPA56K).
- Compressed air: 100 psi (6.9 bar).
- Ambient: shaker +45 to 86 °F (+7 to 30 °C); amplifier +41 to 86 °F (+5 to 30 °C).
- Acoustics: 118 dBA shaker, 102 dBA cooling fan, and 74 dBA amplifier.