Title:
爆風／衝撃周波数同調及び緩和
Document Type and Number:
Japanese Patent JP6707117
Kind Code:
B2
Abstract:
A protective device and method of design to protect against blast and impact for use in any application in which a delicate target has to be protected. The protective device for mitigating a blast or impact frequency having a first layer having a first acoustic impedance and a second layer having a second acoustic impedance. The second acoustic impedance is different than the first acoustic impedance and the second layer is joined to the first layer. The first layer and the second layer are chosen collectively to tune the blast or impact to one or more specific tuned frequencies. In some embodiments, a third layer having a critical damping frequency that matches at least one of the one or more specific tuned frequencies is provided and the third layer is joined to the second layer.
Inventors:
Soures, Michael
Aruda, Ellen Em.
Ram the Day, Tanaz
Worth, Anthony M.
Aruda, Ellen Em.
Ram the Day, Tanaz
Worth, Anthony M.
Application Number:
JP2018198675A
Publication Date:
June 10, 2020
Filing Date:
October 22, 2018
Export Citation:
Assignee:
THE REGENTS OF THE UNIVERSITY OF MICHIGAN
International Classes:
F41H5/04; B32B7/022
Domestic Patent References:
| JP6426180B2 |
Foreign References:
| US20130000476 | ||||
| US6298963 | ||||
| US4838166 | ||||
| US3658635 |
Attorney, Agent or Firm:
Asamura patent office