Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

In the industrial community, there is a need for process control and inspection tools that can improve the efficiency, yield and performance of various manufacturing processes including bonds, surface treatments, case hardening, composites, metallurgy, microcrack detection, adhesion, remote temperature and thickness measurements. By performing the inspection on-line and in real-time, the possibility exists for closed-loop, in-process control. This can lead to reducing cost, labor, scrap, and machine downtime. Conventional ultrasonic methods can be employed to diagnose many materials, in that their acoustic properties are typically functions of the parameters to be ascertained. Present techniques, such as liquid immersion, jet-spray approaches, air-coupled and direct transducer contacting may be of limited use in many process-control applications, including those involving vacuums, high temperatures, plasmas, and workpieces with highly structured and complex surfaces.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 8: Systems, Reliability, Training

Section

New Systems

Pages

1943-1950

DOI

10.1007/978-1-4615-5339-7_252

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Inspection of Flip-Chip Epoxy Underfill in Microelectronic Assemblies Using Compensated Laser-Based Ultrasonic Receivers

La Jolla, CA

In the industrial community, there is a need for process control and inspection tools that can improve the efficiency, yield and performance of various manufacturing processes including bonds, surface treatments, case hardening, composites, metallurgy, microcrack detection, adhesion, remote temperature and thickness measurements. By performing the inspection on-line and in real-time, the possibility exists for closed-loop, in-process control. This can lead to reducing cost, labor, scrap, and machine downtime. Conventional ultrasonic methods can be employed to diagnose many materials, in that their acoustic properties are typically functions of the parameters to be ascertained. Present techniques, such as liquid immersion, jet-spray approaches, air-coupled and direct transducer contacting may be of limited use in many process-control applications, including those involving vacuums, high temperatures, plasmas, and workpieces with highly structured and complex surfaces.