64
Acknowledgments We would like to thank members of the CHSLT and MEEI for their feedback, insight, and for the use of their equipment and
facilities. Support from the WPI-ME/CHSLT and MEEI is highly appreciated.
References
1. Noise Induced Hearing Loss. National Institute on Deafness and Other Communication Disorders (NIDCD). Retrieved from https://www.
nidcd.nih.gov/health/noise-induced-hearing-loss (2019)
2. ANSI/ASA S12.6-216: American National Standard Methods for Measuring the Real-Ear Attenuation of Hearing Protectors, New York (2016)
3. Frank, E.W., Roberge, J.Y., Walsh, J.C., Perkoski, J.J.: Design, Realization, and Application of an Ultra-High-Speed Shock Tube for MiddleEar Mechanics. Retrieved from https://digitalcommons.wpi.edu/mqp-all/7128 (2019)
4. Schlieren Optics. Harvard Natural Sciences Lecture Demonstrations. Harvard University. https://sciencedemonstrations.fas.harvard.edu/presentations/schlieren-optics (n.d.). Accessed 9 Sept 2019
Fig. 11.7 Representative high-speed Schlieren image of acoustical pressure propagating from our shock tube (right to left) to load a sample with
an acoustical pressure on the order of 150 dB SPL. Schlieren imaging and other related full-field techniques are being incorporated into our testing
setups to investigate the effectiveness of hearing protection systems subjected to nonlinear, rate-dependent, conditions. Image acquired at the rate
of 50,000 fps to observe acoustical waves traveling at speeds on the order of Mach 1.5
S. de Oliveira et al.
Acknowledgments We would like to thank members of the CHSLT and MEEI for their feedback, insight, and for the use of their equipment and
facilities. Support from the WPI-ME/CHSLT and MEEI is highly appreciated.
References
1. Noise Induced Hearing Loss. National Institute on Deafness and Other Communication Disorders (NIDCD). Retrieved from https://www.
nidcd.nih.gov/health/noise-induced-hearing-loss (2019)
2. ANSI/ASA S12.6-216: American National Standard Methods for Measuring the Real-Ear Attenuation of Hearing Protectors, New York (2016)
3. Frank, E.W., Roberge, J.Y., Walsh, J.C., Perkoski, J.J.: Design, Realization, and Application of an Ultra-High-Speed Shock Tube for MiddleEar Mechanics. Retrieved from https://digitalcommons.wpi.edu/mqp-all/7128 (2019)
4. Schlieren Optics. Harvard Natural Sciences Lecture Demonstrations. Harvard University. https://sciencedemonstrations.fas.harvard.edu/presentations/schlieren-optics (n.d.). Accessed 9 Sept 2019
Fig. 11.7 Representative high-speed Schlieren image of acoustical pressure propagating from our shock tube (right to left) to load a sample with
an acoustical pressure on the order of 150 dB SPL. Schlieren imaging and other related full-field techniques are being incorporated into our testing
setups to investigate the effectiveness of hearing protection systems subjected to nonlinear, rate-dependent, conditions. Image acquired at the rate
of 50,000 fps to observe acoustical waves traveling at speeds on the order of Mach 1.5
S. de Oliveira et al.