Section 14(2) of the SRCA states:
14(2) Compensation is not payable in respect of an injury that is intentionally self-inflicted.
Policy clarifying the application of this exclusion in relation to suicide is provided at Chapter 3.5 Suicides [2].
Links
[1] https://clik.dva.gov.au/user/login?destination=node/20249%23comment-form
[2] https://clik.dva.gov.au/military-compensation-srca-manuals-and-resources-library/death-handbook/ch-3-investigating-nexus-employment/35-suicides