Company Filing History:
Years Active: 1982-1984
Title: Innovations of Donald W. Wisander
Introduction
Donald W. Wisander is an accomplished inventor based in Columbia Station, OH (US). He has made significant contributions to the field of turbomachinery through his innovative patents. With a total of 3 patents, Wisander has focused on enhancing the thermal shock resistance of ceramic layers used in gas-path seals.
Latest Patents
Wisander's latest patents include a method of fabricating an abradable gas path seal. This invention aims to improve the thermal shock resistance of a ceramic layer, particularly in turbomachinery applications. The improved abradable lining is deposited on a shroud, forming a gas-path seal. The invention introduces 'benign' microcracks that do not propagate significantly under thermal shock conditions. Laser surface fusion treatment is employed to create these microcracks, resulting in a fine crack network that prevents catastrophic failures during thermal exposure.
Another notable patent by Wisander is the laser surface fusion of plasma sprayed ceramic turbine seals. Similar to his previous invention, this patent also focuses on enhancing thermal shock resistance through the introduction of microcracks. The laser scanning process forms a continuous dense layer, which, upon cooling, develops a fine crack network that mitigates the risk of catastrophic cracking.
Career Highlights
Wisander has dedicated his career to advancing technologies in turbomachinery. His innovative approaches have led to significant improvements in the performance and reliability of gas-path seals. His work is recognized for its practical applications in the industry, contributing to safer and more efficient turbine operations.
Collaborations
Wisander has collaborated with Robert C. Bill, further enhancing the impact of his inventions in the field. Their combined expertise has led to advancements that benefit the turbomachinery sector.
Conclusion
Donald W. Wisander's contributions to the field of turbomachinery through his innovative patents demonstrate his commitment to improving technology. His work on thermal shock resistance in ceramic layers has paved the way for safer and more efficient turbine operations.