Aspiration of Voiceless Affricate in English

My qiestion is about the voiceless affricate ch( CHair, maTCH, baTCH, strucTure) as it is used in ENGLISH:English has two affricates: the ch in chair and the j in jar.The ch is a voiceless affricate.My question is, since this is voiceless, does it follow the same rules of aspiration as voiceless stops in English? That is, like p, t, k?P, t and k are usually aspirated when at the beginning of a word(except when preceded by s in the same syllable) and at the onset of a stressed syllable. Does the same hold true for ch?So "chair" is aspirated whe...Read more