Lab Tours are being offered Wednesday, July 19, from 5:30-7:30 pm. Sign-up sheets are available here and at the QNDE office and at the registration desk.
Lab tours are full
Anechoic chamber – BYU Acoustics Group
The large anechoic chamber (anechoic: free from echo) is a research facility designed to absorb acoustic reflections. In this way it simulates free-field radiation conditions as if no walls were present, thus allowing an acoustic measurement to be conducted with minimal interference from room effects. With working dimensions of 8.71 x 5.66 x 5.74 m, the room is anechoic down to approximately 80 Hz and large enough to handle a variety of experiments. Within the chamber there are several accommodations, including positioning systems and rotation systems to map out the sound field from a sound source.
Time Reversal Acoustics – Brian Anderson
Time reversal is a method to focus wave energy to a location in space. It can be used to focus high energy sound or vibrations, locate a source, or to communicate signals between two points. BYU uses piezoelectric transducers and a scanning laser Doppler vibrometer to locate and characterize damage and defects in solid media. Focused ultrasonic vibrations are created with time reversal to allow pointwise inspection of the surface of a structure. Researchers listen for nonlinear vibration signatures that are indicative of damage and defects. In particular, our nonlinear techniques are sensitive to closed cracks that traditional linear NDE techniques might miss. BYU is currently applying their techniques to stress corrosion cracking in steel storage canisters that house spent nuclear fuel. BYU heavily collaborates with Los Alamos National Laboratory.
Mazzeo Research Group – NDE for bridges
This research group employs electrical and acoustic techniques to non-destructively evaluate the properties of concrete bridge decks in the field. In particular, the goal of the research is to develop fast-moving platforms that can be used at highway speeds to rapidly characterize bridges. These platforms minimize disruptions to the traveling public and scan large areas. The group develops algorithms to process the data to generate condition maps automatically after data collection. They will exhibit their vertical impedance trailer, impact-echo trailer, and highway-speed acoustic trailer.
Materials and Pavements Research Group – W. Spencer Guthrie
The primary mission of the BYU Materials and Pavements Research Group is to advance the understanding of factors affecting transportation infrastructure performance through collaborative learning and partnerships with industry. The group performs research mainly related to the design, construction, and management of roads and bridges in frost-affected regions. Members of the research group employ a wide variety of NDE and other tests to assess specific properties of soil, asphalt, concrete, and steel; for this purpose, extensive laboratory and field testing equipment is housed in the BYU Highway Materials Laboratory.
Dean Wheeler – Li-ion battery fabrication testing
Lithium-ion batteries are great energy storage devices. This is why they are used ubiquitously in mobile phones and laptop computers. However, there are a number of challenges to adapting these batteries for use in hybridand fully-electric vehicles. In particular, we need a cheap, abuse-tolerant, and long-life battery stack that can generate a large amount of specific power. BYU’s work in this area is to engineer improved electrode morphologies in order to promote battery power and life. In addition, they perform experiments and computer simulations in order to obtain ionic and electronic transport properties in battery components. This work is supported by the U.S. Department of Energy through the BMR program.