This study, conducted by the Mechanical Testing Laboratory at the University of Santiago, Chile, evaluated the diametral compression resistance (Side Crushing Strength, SCS) of a vitreous biomaterial obtained through Powder House’s Vitreous Transformation Process applied to grape pomace from Biograpes SpA. Controlled tests were performed using a universal testing machine (Instron 3365), applying a constant speed of 1 mm/min up to a maximum load of 200 N. The results indicate a mechanical response between plastic and brittle behavior, with progressive micro-fracture events evidenced by successive drops in the force–displacement curve. When normalizing force by unit length (F/h), an average operational resistance of 2.3 N/mm was observed. The force–displacement curve exhibited a plateau-like profile, indicative of gradual, non-catastrophic collapse. This behavior demonstrates that the vitreous biomaterial possesses functional fragility, enabling controlled fragmentation during milling. This improves energy efficiency and prevents excessive energy accumulation prior to failure. The study confirms that the structural configuration of the vitreous biomaterial not only facilitates handling and storage, but also enhances its mechanical performance under stress in industrial processes such as particle size reduction.
