Stress concentrator for an angled scraper

A compactor wheel assembly comprising:

• a yoke subassembly;
• a compactor drum subassembly that is rotatably attached to the yoke subassembly about an axis of rotation;
• and
• a scraper subassembly that is attached to the yoke subassembly proximate to the compactor drum subassembly;
• wherein the scraper subassembly includes a plurality of scrapers, each of the plurality of scrapers including:
• an attachment portion,
• a scraping portion that forms a first oblique angle with the attachment portion, and
• a transition portion connecting the scraping portion to the attachment portion, the transition portion defining a stress concentrator,
• wherein the transition portion includes an upper surface, a lower surface, a first side surface, and a second side surface,
• wherein the stress concentrator includes a groove defined by the upper surface or the lower surface, and
• wherein the groove extends from the first side surface to the second side surface.

A scraper for use with a compactor wheel assembly, the scraper comprising:

• an attachment portion;
• a scraping portion;
• and
• a transition portion connecting the scraping portion to the attachment portion, the transition portion defining a stress concentrator that is configured to cause the scraper to break,
• wherein the transition portion includes an upper surface, a lower surface, a first side surface, and a second side surface, and
• wherein the stress concentrator includes a groove defined by the upper surface and extending from the first side surface to the second side surface.