Measurement Method Tests Fit of Exoskeletons

This testing method ensures that an exoskeleton and the person wearing it are moving smoothly and in harmony.

Fluid-Filled Frequency-Tunable Mass Damper

Applications include absorbers, tuned mass dampers, harmonic absorbers, and seismic dampers.

Spring Drive Fitting

Applications include valves, tubes, and other gas and fluid system components.

Better Solutions for Testing and Measuring Compression and Extension Springs

Learn about the latest measurement technology designed to ensure accurate testing of helical compression and extension springs.

Miniature Spring Performance Tester

In order to qualify miniature springs, manufacturers of these systems rely on commercially available testers that are designed for large-scale springs (>0.5" diameter). Commercially available spring...

Calculating the Estimated Fatigue Life of a Disc Spring

In discussing fatigue life, it is important to distinguish between disc springs and conical spring washers, as they differ by design and intended usage. Conical spring washers are...

Cryogenic Cam Butterfly Valve

Typical butterfly valves cannot seal at both ambient and cryogenic temperatures. At cryogenic temperatures, valves grow and shrink, changing critical dimensions such as distance between the disc and seat....

Understanding the Basics of Gas Spring Application

When choosing a gas spring for a particular application, it’s imperative to have a basic understanding of the workings and terminology used when specifying gas springs. This article offers...

Pilot-Assisted Check Valve for Low-Pressure Applications

Check valves are traditionally designed as a simple poppet/spring system where the spring is designed to equal the force created from the sealing area of the valve seat multiplied by...

Spring Plunger Locking Mechanism for Use in Hand-Actuated Tools

In designing a hand-actuated microspine gripper, a ratcheting locking mechanism was required that had discrete points of locking engagement. The mechanism had to actuate...

Gallium-Infused Liquid-Solid Composites

Materials scientists are looking to nature — at the discs in human spines and the skin of ocean-diving fish — for clues about how to design materials with both flexibility and stiffness. The...

3D-Printed Objects Connect to WiFi Without Electronics

CAD models have been developed that enable objects to be 3D-printed out of commercially available plastics; these objects can wirelessly communicate with other smart devices, including a...

Non-Collinear Valve Actuation System

NASA’s Marshall Space Flight Center scientists have invented a novel valve actuator where the primary actuating system and return spring system are arranged non-collinearly. In the past, valve actuators...

Contacts for Hi-Rel Connectors: Comparing Technologies

Contact design is critical to the performance of any connector — especially for devices that must function in harsh environments where extremes of temperature, shock, and vibration are...

Injection Molding Service Saves Time and Money for Spring Manufacturer

Proto Labs
Maple Plain, MN
www.protolabs.com

As products get smaller, their components need to follow suit, and springs are no exception. In a variety of...

Compact, Portable Device for Structural Vibration Reduction

Tuned mass dampers are used worldwide to mitigate vibrations in structures like buildings and bridges where excessive movement can be alarming or even sickening to occupants. The...

Custom Brakes Meet the Challenges of Gearless Motor Elevators

A manufacturer of low and high-rise elevators faced a challenge when customers began calling for a flexible elevator to meet the needs of the growing mid-rise, mixed-use building...

Small Robot Has Outstanding Vertical Agility

Roboticists at the University of California, Berkeley, have designed a small robot that can leap into the air and then spring off a wall, or perform multiple vertical jumps in a row, resulting in...

Impact Tester Device

NASA’s Langley Research Center has developed a portable device to simulate low-velocity impacts on a material or structure. As composite materials are highly susceptible to damage caused by low-velocity impact, they...

Aerodynamically Stabilized Instrument Platform

The AeroPod, developed at NASA Goddard Space Flight Center’s Wallops Flight Facility, is a passive device that uses aerodynamic forces to stabilize an instrument package suspended from a kite...

Magnetic Relief Valve

A magnetically retained pressure-relief valve enables quick-open on/off operation when overpressure is reached.

Inventors at NASA’s Kennedy Space Center have developed a magnetically retained, fast-response...

Flexible Volumetric Structure

NASA’s Langley Research Center has developed composite elastic skins for covering shape-changing (morphable) structures. These skins are intended especially for use on advanced aircraft that change shapes in...

An Inside Look at Electromechanical Power-Off Braking Options

Power-off brakes are designed to hold or stop motion in the absence of power. Adding an electrical current releases the brake, freeing the load for motion. Given the safety...

Multiphysics CAE of a Shock Absorber

Shock absorbers are important parts of vehicles. The shock absorber is used to observe the vibrations from shock loads due to irregularities of the road surface, and operates without affecting the...

Walk and Roll Robot

In smooth terrain, the most efficient motion to traverse the terrain is rolling. However, when a wheeled vehicle encounters obstacles, it must circumvent them if possible or choose an alternate path. Legged vehicles can...

Fluid Harmonic Absorber

NASA Marshall Space Flight Center’s Fluid Structure Coupling (FSC) technology is a highly efficient and passive method to control the way fluids and structures communicate and dictate the behavior of a system. This...