H
IGH PERFORMANCE STAND-OFF DAMPING SYSTEMS
Overview:

DTI has developed its proprietary Stand-Off Damping Systems to provide extremely high levels of damping performance while being extremely weight-efficient. Stand-Off Damping Systems suppress noise, vibrations, and/or high cycle fatigue damage due to resonance response. Candidate application include:
Stand-Off Damping System on
skin of aircraft fuselage.
  • Aircraft Fuselage Skin
  • Aerospace Structures
  • Automotive/Light Truck
  • Heavy Truck
  • Ships
  • Luxury Yachts
  • Industrial Machinery
  • Off-Road Equipment
  • Honeycomb Composite Panels
BENEFIT OF THE STAND-OFF DAMPING SYSTEM:
Stand-Off Damping Systems are designed and manufactured by DTI to deliver extremely high levels of structural damping with minimum weight addition. The unique and proprietary nature of the Stand-Off Damping System concept results in substantially higher strains in the viscoelastic damping material of the Stand-Off Damping System when compared to conventional constrained layer damping treatments. Higher strains in the viscoelastic damping material results in superior damping performance and enhanced damping performance relative to temperature.

Vibratory reduction from a DTI Stand-Off Damping System tested on a .032" aircraft aluminum test structure with 25% coverage.
Frequency Response Function (FRF) from a DTI Stand-Off Damping System tested on a .032" aircraft aluminum test structure with 25% coverage.

INSTALLATION
The Stand-Off Damping System is provided with a pressure sensitive adhesive (PSA), which is protected by a release liner. Typically, individual damping system parts are provided die-cut or pre-trimmed to shape. Installation consists of simply peeling away the release liner, positioning the piece over the installation site, and pressing down. Installing the Stand-Off Damping System customers report installation time saving of (90%) or more compared to competing damping systems.

DTI's Stand-Off Damping System can be cut to any shape to ensure optimal performance from our treatments.DTI can incorporate wires and other obstructions into our Stand-Off Damping Systems design.

COST ISSUES:
The Stand-Off Damping System is typically added to existing structure. There are no re-design or replacement costs. Because the Stand-Off Damping System is extremely efficient, it is usually possible to utilize partial coverage strategies, thereby saving material cost when compared to other damping systems. Suppression of resonance response generally results in diminished vibration, diminished noise, lower maintenance costs (high cycle fatigue issues), better product quality, and therefore higher sales and more customer satisfaction.

WEIGHT ISSUES
The Stand-Off Damping System is believed to be the highest performance and most weight efficient passive damping system on the market today. Several production versions utilizing carbon fiber composite subcomponents are processed in-house at DTI. Also, since the Stand-Off Damping System concept is extremely efficient, structures are typically treated with partial coverage resulting in further weight savings.

APPLICATIONS:
DTI tends to tailor its Stand-Off Damping System family of products to the particular application. Treatment component materials, viscoelastic materials, and coverage footprint are chosen based on the particular structural dynamics and temperature regime of the application site. DTI has a fully staffed structural dynamics laboratory and finite element analysis capability utilized for design, development, and optimization of its Stand-Off Damping System products.

Stand-Off Damping Systems are currently in production on __ different applications - __ specifically addressing high-cycle fatigue issues, __ specifically addressing vibration suppression, and __ addressing noise suppression.

MANUFACTURING AND QUALITY CONTROL
DTI has the manufacturing facilities and capabilities to manufacture application-specific Stand-Off Damping Systems and to manage and maintain the appropriate quality control. DTI also has full clean room packaging capabilities for spacecraft or launch vehicle applications.

EXAMPLES:
Data associated with several interesting application of the Stand-Off Damping Systems are included in the following measurement output.