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Lester/Mehl Honor Lecture

The Lester/Mehl Honor Lecture is established in memory of the outstanding contributions to ASNT and the NDT industry by Dr. Horace H. Lester, and Dr. Robert F. Mehl. Dr. Lester wrote numerous published articles, fostered techniques, and did seminal work in ASNT committees. Dr. Mehl was the first person to use radium for gamma radiography. The Lester Honor Lecture and Mehl Honor Lectures were separate recognitions, given every other year, until 2018.

Its purpose is to recognize individuals who have made outstanding contributions to the science of nondestructive testing. Such contributions may be made in the area of research, applications technology, management, education, equipment development, or other related areas.


Nominees must have made outstanding contributions to the science of NDT. The candidate must be prominent amongst their peers.


Nominations can be made by any member of ASNT and must include a detailed justification for the award.

Click Here to Submit Your Nomination Online


The Non-Financial Recognition & Honors Committee selects up to one individual per year. The recipient is expected to:

  • Provide a lecture the ASNT Annual Conference.
  • Provide a written text of that lecture to ASNT for publication in Materials Evaluation.

Award Timeline

  • Nomination deadline: 30 September
  • The Non-Financial Recognition and Honors Committee will provide its recommendation to the Board of Directors before or during ASNT’s Annual Conference
  • The recipient will be notified following the ASNT Annual Conference

For any questions regarding the award process or timeline, please contact ASNT’s Program Specialist at

Lester Mehl Recipient

2021 Recipient

Congratulations to Dr. Bernhard Tittmann for receiving the 2021 Lester/Mehl Honor Lecture. Dr. Tittmann has been a member of ASNT since 1980 and has an extensive NDT background.

Lester/Mehl Lecture

Past Recipients

Check out the full list of past recipients for the Lester/Mehl Honor Lecture.