Deflection is a research area that involves studying the behavior of materials or structures when subjected to external loading, such as bending or deformation. It focuses on how materials or structures respond to these loads, including how much they bend or deflect, how they distribute stresses internally, and how they ultimately fail when subjected to excessive loading. Deflection research can be used to design more efficient and reliable structures, improve safety measures, and enhance the overall performance of materials in various applications.