Single- and multiple-impact jet apparatus and results

Colin R. Seward; Charles S. James Pickles; John E. Field

doi:10.1117/12.22507

1 October 1990 Single- and multiple-impact jet apparatus and results

Colin R. Seward, Charles S. James Pickles, John E. Field

Proceedings Volume 1326, Window and Dome Technologies and Materials II; (1990) https://doi.org/10.1117/12.22507
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

The advantages of firing liquid jets of water at stationary specimens to study the effects of single drop impact have been well documented. The development of a multiple impact jet apparatus (MIJA) at the Cavendish Laboratory now allows a controlled study ofthe multiple liquid impact process in a similar way. The design ofthe MIJA apparatus has been established around the existing nozzle design technology for the single impact gun. This design allows the creation of liquid jets of a high quality: spherically fronted; symmetrical; reproducible and with a stable coherent core. In this way the MLJA apparatus can simulate the impact of 2 to 10mm diameter drops over a range of velocities up to 400 m s1 and with a repetition rate of -1O min^-1. The apparatus is entirely automated with a sophisticated computer control maintaining an accurate record of experiments performed and the impact positions and velocities. The computer allows impact arrays of any type to be studied and restrains the spread of jet velocities to a 2% standard deviation around that selected. The first part of this paper describes the design and performance characteristics ofthe two pieces of jet apparatus. The final sections then look at some preliminary damage results.

Citation Download Citation

Colin R. Seward, Charles S. James Pickles, and John E. Field "Single- and multiple-impact jet apparatus and results", Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); https://doi.org/10.1117/12.22507

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available