ðɪs mˈeɪ ɹᵻkwˈaɪɚ səfˈɪstᵻkˌeɪɾᵻd ɪkwˈɪpmənt, ænd dᵻstɹˈʌktɪv tˈɛstɪŋ, bˌʌt ˈiːvən ɐ vˈɪʒuːəl ɪnspˈɛkʃən kæn pɹəvˈaɪd ɐ dʒˈɛnɚɹəl aɪdˈiə.
This may require sophisticated equipment, and destructive testing, but even a visual inspection can provide a general idea.